Weeds:Photos
WEED PEST PHOTO GALLERY
Contents
- 1 2_Jointed_goatgrass_plants_from_1_seed_cylinder
- 2 2_Leaf_wild_proso_millet_seedling_1
- 3 4_Leaf_wild_proso_millet_seedling_2
- 4 Abutilon_theophrasti_velvetleaf
- 5 Abutilon_theophrasti_velvetleaf
- 6 Acanthaceae,_Asystasia_schimperi_T._Anders.
- 7 Alkali_grass
- 8 Alkanet,_large_blue
- 9 Amaranth,_common
- 10 Amaranth,_green
- 11 Amaranth_2
- 12 Amaranth_3
- 13 Amaranth_6
- 14 Amaranthaceae,_Amaranthus_graecizans_L.
- 15 Amaranthus_sp._Pigweed
- 16 Amaranthus_sp._Pigweed
- 17 Ambrosia_artemisiifolia_common_ragweed
- 18 Ambrosia_artemisiifolia_common_ragweed
- 19 American_black_nightshade_plant
- 20 Amutgrass_(Sporoblus_poiretii)
- 21 Aneilema_japonica
- 22 Annual_bluegrass_(Poa_annua)
- 23 Annual_fleabane_(Erigeron_annuus)
- 24 Aster,_purple_(Machaeranthera_canescens)_1
- 25 Aster,_purple_(Machaeranthera_canescens)_2
- 26 Aster,_purple_(Machaeranthera_canescens)_3
- 27 Asthma_weed_(Euphorbiaceae,_Euphorbia_hirta_L.)
- 28 Barley,_foxtail_(Hordeum_jubatum)_adult
- 29 Barley,_foxtail_(Hordeum_jubatum)_flower
- 30 Barley,_mouse/wall
- 31 Barnyard_grass_(Echinochloa_crus-galli)
- 32 Barnyard_grass_(Echinochloa_crus-galli)
- 33 Barnyard_grass_(Echinochloa_crus-galli)
- 34 Barnyard_grass_(Echinochloa_crus-galli)
- 35 Barnyard_grass_1
- 36 Barnyard_grass_2
- 37 Barnyard_grass_3
- 38 Barnyard_grass_4
- 39 Barnyard_grass_in_beans
- 40 Barnyard_grass_seedhead
- 41 Barnyard_grass_seedling
- 42 Barnyardgrass_(Echinochloa_crus-galli)
- 43 Barnyardgrass_+_onion
- 44 Barnyardgrass_seedling,_medium_sized
- 45 Bedstraw,_rough
- 46 Bee_Balm,_Monaida_fistulosa
- 47 Beggarweed_in_dry_beans
- 48 Bermuda_grass/Star_grass
- 49 Bermudagrass_(Cynodon_dactylon)
- 50 Bermudagrass_*_(Cynodon_dactylon)
- 51 Bermudagrass_*_(Cynodon_dactylon)
- 52 Bermudagrass_*_(Cynodon_dactylon)
- 53 Bermudagrass_*_(Cynodon_dactylon)
- 54 Big_bluestem
- 55 Big_bluestem_racemes
- 56 Big_Sagebrush
- 57 bigroot_morningglory_(Ipomoea_pandurata)
- 58 Bindweed,_field
- 59 Bindweed,_field_*_(Convolvulus_arvensis)
- 60 Bindweed,_field_*_(Convolvulus_arvensis)
- 61 Bindweed,_field_*_(Convolvulus_arvensis)
- 62 Bindweed,_field_*_(Convolvulus_arvensis)
- 63 Bindweed,_mallow-leaved
- 64 Bindweed,_shaggy
- 65 Bindweed_+_onion
- 66 Bindweed_field
- 67 Bindweed_flower
- 68 Bindweed_vine
- 69 Bindweed_with_arrow-shaped_leaves
- 70 Birdsfoot_trefoil
- 71 Bitter_sneezeweed(Helenium_amarum)
- 72 Black_bindweed_(Polygonaceae,_Fallopia_convolvulus_L._A._Love)
- 73 Black_medic,_Medicago_lupulina
- 74 Black_medic,_Medicago_lupulina
- 75 Black_nightshade
- 76 Black_nightshade_(Sol_anaceae,_Solanum_nigrum_L.)
- 77 Black_nightshade_(Solanum_nigrum)
- 78 Black-awned_wheat
- 79 Blackberry_(Rubus_sp.)_
- 80 Blackjack_(Compositae,_Bidens_pilosa_L.)
- 81 Bladder_campion
- 82 Blessed_thistle_(Cnicus_benedictus)
- 83 Blue_couch/Couch_grass_(Gramineae,_Digitaria_abyssinica_A._Rich._Stapf)
- 84 Blue_grama
- 85 Blue_grama_raceme
- 86 Blue_vervain_(Verbena_hastata)_
- 87 Blue_woodruff
- 88 Bluegrass,_annual_(Poa_annua)
- 89 Bluegrass,_bulbous_(Poa_bulbosa)
- 90 Bluegrass,_bulbous_(Poa_bulbosa)
- 91 Bluegrass,_bulbous_(Poa_bulbosa)
- 92 Bluegrass,_bulbous_(Poa_bulbosa)
- 93 Bouncing_Bet
- 94 Bouncing_Bet,_Saponaria_officinalis
- 95 Bracted_plantain_(Plantago_aristata)
- 96 Bristly_starbur_(Acanthospemum_hispidum)
- 97 Broadleaf_dock_(Rumex_obtusifolius)
- 98 Broadleaf_plantain_(Plantago_major)
- 99 Broadleaf_signalgrass_(Brachiaria_platyphylla)
- 100 Broadleaf_weed_in_onion
- 101 Broadleaf_weed_in_pole_bean_field
- 102 Brome,_barren
- 103 Brome,_downy
- 104 Brome,_downy_(Bromus_tectorum)
- 105 Brome,_downy_(Bromus_tectorum)
- 106 Brome,_downy_(Bromus_tectorum)
- 107 Brome,_downy_(Bromus_tectorum)
- 108 Brome_grass_(Gramineae,_Bromus_pectinatus_Thunb.)
- 109 Bromegrass_seeds
- 110 Broomrape,_branched
- 111 Broomrape,_drooping
- 112 Broomrape,_Egyptian
- 113 Broomrape,_scalloped
- 114 Broomsedge_(Andropogon_virginicus)
- 115 Buckhorn_plantain_(Plantago_lanceolata)
- 116 Buckhorn_plantain_seeds
- 117 Buckwheat,_wild_(Polygonum_convolvulus)
- 118 Buckwheat,_wild_(Polygonum_convolvulus)
- 119 Buckwheat,_wild_(Polygonum_convolvulus)
- 120 Buckwheat_plants
- 121 Buckwheat_seedling
- 122 Buffalo_Bur
- 123 Buffalo_Bur
- 124 Buffalo_bur_,_Solanum_rostratum
- 125 Buffalo_bur_,_Solanum_rostratum
- 126 Buffalo_bur_,_Solanum_rostratum
- 127 Buffalo_bur_adult
- 128 Buffalo_bur_in_dry_beans
- 129 Buffalo_bur_in_dry_beans
- 130 Buffalo_bur_plant
- 131 Buffalo_bur_plant_and_flower
- 132 Buffalo_bur_seed
- 133 Buffalo_bur_seedling
- 134 Buffalograss
- 135 Bull_Thistle
- 136 Bull_Thistle_infestation_of_rangeland
- 137 Bull_Thistle_leaf_and_spines
- 138 Bull_Thistle_rosette
- 139 Bullwort/Common_bishops_weed
- 140 Bur_buttercup,_Ranunculus_testiculatus
- 141 Bur_buttercup,_Ranunculus_testiculatus
- 142 Bur_buttercup,_Ranunculus_testiculatus
- 143 Bur_buttercup,_Ranunculus_testiculatus
- 144 Burclover/Medick,_toothed
- 145 Burcucumber(Sicyos_angulatus)
- 146 Burdock,_Arctium_minus
- 147 Burdock,_Arctium_minus
- 148 Burdock,_Arctium_minus
- 149 Burdock,_Arctium_minus
- 150 Bushy_Knotweed
- 151 Bushy_knotweed_plant
- 152 Buttercup,_corn
- 153 buttercup_(Ranunculus_sp.)_
- 154 butterfly_milkweed_(Asclepias_tuberosa)
- 155 Calyx_details_on_nightshade_berries
- 156 camphorweed_(Heterotheca_subaxillaris)
- 157 Canada_Thistle
- 158 Canada_thistle
- 159 Canada_thistle
- 160 Canada_thistle
- 161 Canada_thistle
- 162 Canada_Thistle,_early_flowering
- 163 Canada_Thistle,_mature_plant
- 164 Canada_thistle,_seeds
- 165 Canada_thistle_adults
- 166 Canada_Thistle_bud_and_flower
- 167 Canada_Thistle_early_bud
- 168 Canada_Thistle_flowering
- 169 Canada_thistle_in_growing_corn
- 170 Canada_Thistle_leaf,_spines_and_waxy_cuticle
- 171 Canada_Thistle_mid_to_late_bloom
- 172 Canada_Thistle_post-bloom_seed_set
- 173 Canada_Thistle_rosette
- 174 Canada_Thistle_seedling
- 175 Canada_Thistle_seedling
- 176 Canada_Thistle_treated_with_Pseudomonas
- 177 Canary_grass,_bristle-spiked/hood
- 178 Canary_grass,_lesser
- 179 Cape_sorrel
- 180 Carolina_falsedanelion_(Pyrropappus_carolinianus)
- 181 Carolina_geranium_(Geranium_carolinianum)
- 182 Carpetweed_(Mullugo_verticillata)
- 183 Castor_bean
- 184 Catchfly,_conoid
- 185 Catnip,_Nepeta_cataria
- 186 Catnip,_Nepeta_cataria
- 187 Cattail,_Typha_latifolia
- 188 Cattail,_Typha_latifolia
- 189 Cattail,_Typha_latifolia
- 190 Cattails
- 191 Cattails
- 192 Cheese-weed/Mallow
- 193 Chenopodiaceae,_Chenopodium_tourale_L.
- 194 Chenopodium_album_common_lambsquarters
- 195 Chenopodium_album_common_lambsquarters
- 196 Chickweed,_common
- 197 Chickweed,_common;_Stellaria_media
- 198 Chickweed,_common;_Stellaria_media
- 199 Chickweed,_common;_Stellaria_media
- 200 Chickweed,_mouseear;_Cerastium_vulgatum
- 201 Chickweed,_mouseear;_Cerastium_vulgatum
- 202 Chickweed_(Caryophyllaceae,_Stellaria_media_L._VIII.)
- 203 Chickweed_(Stollaria_media)
- 204 Chicory,_Chichorium_intybus
- 205 Chicory,_Chichorium_intybus
- 206 Chicory,_Cichorium_intybus
- 207 Chicory,_Cichorium_intybus
- 208 Chicory,_Cichorium_intybus
- 209 Chicory,_Cichorium_intybus
- 210 Chinese_lantern_(Sol_anaceae,_Nicandra_physalodes_Scop.)
- 211 Chk
- 212 Chk
- 213 Chromolaena_odorata
- 214 Clammy_groundcherry
- 215 Clover
- 216 Clover,_white;_Trifolium_repens
- 217 Cocklebur
- 218 Cocklebur,_spiny
- 219 Cocklebur,_Xanthium_strumarium
- 220 Cocklebur,_Xanthium_strumarium
- 221 Cocklebur,_Xanthium_strumarium
- 222 Cocklebur,_Xanthium_strumarium
- 223 Cocklebur_in_beans
- 224 Columbine_Hybrid,_Aguilegia_sp.
- 225 Common_Cattail
- 226 Common_Cocklebur
- 227 Common_cocklebur_(Xanthium_pennyslvanicum)
- 228 Common_cocklebur_adult
- 229 Common_cocklebur_flower
- 230 Common_cocklebur_seedling
- 231 Common_cocklebur_seedling_with_2-true_leaves
- 232 common_greenbriar_(Smilax_rotundifolia)
- 233 Common_Knotweed
- 234 Common_knotweed_plant
- 235 Common_Lambsquarter,_2-leaf_stage
- 236 Common_Lambsquarters
- 237 common_lambsquarters_(Chenopodium_album)
- 238 Common_Mallow
- 239 Common_mallow
- 240 Common_mallow
- 241 Common_Mallow
- 242 Common_mallow,_Malva_neglecta
- 243 Common_mallow,_Malva_neglecta
- 244 Common_mallow,_Malva_neglecta
- 245 Common_mallow,_Malva_neglecta
- 246 Common_mallow_+_onion
- 247 Common_mallow_+_onion
- 248 Common_mallow_plant_and_flower
- 249 Common_mallow_seedling
- 250 Common_Milkweed
- 251 Common_milkweed
- 252 Common_milkweed_plant
- 253 Common_Morningglory
- 254 Common_mullein,_Verbascum_thapsus
- 255 Common_mullein,_Verbascum_thapsus
- 256 Common_mullein,_Verbascum_thapsus
- 257 Common_mullein,_Verbascum_thapsus
- 258 common_mullein_(Verbascum_thapsus)
- 259 common_purselane_(Portulaca_oleracea)
- 260 Common_Purslane
- 261 Common_purslane
- 262 Common_purslane
- 263 Common_purslane
- 264 Common_purslane_plant_in_flower
- 265 Common_purslane_plant_in_onion_field
- 266 Common_purslane_seedling
- 267 Common_purslane_seedling
- 268 common_ragweed_(Ambrosia_artemisiifolia)
- 269 Common_sunflower,_cotyledons_visible
- 270 Common_sunflower_plant
- 271 Common_sunflower_plants
- 272 Common_sunflower_seedling
- 273 Common_sunflower_seedling
- 274 Common_Waterhemp
- 275 Common_waterhemp_plant
- 276 Common_yarrow_(Achillea_millefolum)
- 277 Common_yellow_woodsorrel_(Oxalis_stricta)
- 278 Compositae,_Gutenbergia_cordifolia_Benth._ex_Oliv.
- 279 Compositae,_Sphaeranthus_bullatus_Mattf.
- 280 Convolvulus_arvensis
- 281 Corn_cockle_(Agrostemma_githago)
- 282 Cornflower_(Centaurea_cyanus)
- 283 Crabgrass
- 284 Crabgrass,_Digitaria_sanguinalis
- 285 Crabgrass,_Digitaria_sanguinalis
- 286 Crabgrass,_Digitaria_sanguinalis
- 287 Cranes-bill
- 288 Crazyweed,_Oxytropis_lambertii
- 289 Cress,_hoary;_Cardaria_draba
- 290 Cress,_hoary;_Cardaria_draba
- 291 Cress,_hoary;_Cardaria_draba
- 292 Cress,_hoary;_Cardaria_draba
- 293 Crested_wheatgrass
- 294 Crested_wheatgrass
- 295 Crested_wheatgrass
- 296 Crested_wheatgrass
- 297 Croton
- 298 Crowfootgrass_(Dactyloctenium_aegyptium)
- 299 Crows-foot_grass_(Gramineae,_Dactyloctenium_aegyptium_L._Willd.)
- 300 Cruciferae,_Erucastrum_arabicum_Fisch._&_Mey.
- 301 Cudweed_(Gnaphalium_sp.)
- 302 Curled_dock_seeds
- 303 Curly_dock_(Rumex_crispus)
- 304 Curse_of_India/Lantana_(Verbenaceae,_Lantana_camara_L.)
- 305 Cuscuta_campestris
- 306 Cuscuta_japonica_flowering
- 307 Cuscuta_japonica_vegetative_shoots
- 308 Cuscuta_sp._Dodder
- 309 Ccutleaf_eveningprimrose_(Oenothera_laciniata)
- 310 Cutleaf_nightshade_plant
- 311 Cyperaceae,_Cyperus_teneristolon_Mattf._&_Kuk.
- 312 Cyperus_difformis
- 313 Cyperus_esculentus_yellow_nutsedge
- 314 Cyperus_esculentus_yellow_nutsedge
- 315 Cyperus_iria
- 316 Cyperus_rotundus
- 317 Cyperus_serotinus
- 318 Cypressvine_morningglory_(Ipomoea_quamoclit)
- 319 Daisy,_crown
- 320 Dalmation_Toadflax
- 321 Dalmation_Toadflax
- 322 Dalmation_Toadflax
- 323 Dalmation_Toadflax,_Linaria_genistifolia
- 324 Dalmation_Toadflax_flower
- 325 Dalmation_Toadflax_habitat
- 326 Dalmation_Toadflax_leaf_shape
- 327 Dalmation_Toadflax_leaves_and_flowers
- 328 Dalmation_Toadflax_vegetative_regrowth_in_spring
- 329 Dalmation_Toadflax_with_sworled_leaves
- 330 Dame's_Rocket,_Hesperis_matroualis
- 331 Dame's_Rocket_(Boulder_County)
- 332 Dandelion
- 333 Dandelion,_Taraxacum_officinale
- 334 Dandelion,_Taraxacum_officinale
- 335 Dandelion,_Taraxacum_officinale
- 336 Dandelion,_Taraxacum_officinale
- 337 dandelion_(Taraxacum_officinale)
- 338 Dandelion_in_beans
- 339 Dandelion_in_onion
- 340 Dandelions
- 341 Datura_stramonium_jimsonweed
- 342 Dature_meteloides
- 343 dayflower_(Commelina_communis)
- 344 Delea_clover_seeds
- 345 Devil's_Claw
- 346 Devil's_claw
- 347 Devil's_claw_flower
- 348 Devil's_claw_flower
- 349 Devil's_thorn_(Polygonaceae,_Emex_australis_Steinh.)
- 350 Dichondra_(Dichondra_repens)
- 351 Diffuse_Knapweed
- 352 Diffuse_Knapweed_flower
- 353 Diffuse_Knapweed_flowering
- 354 Diffuse_Knapweed_rosette
- 355 Diffuse_Knapweed_rosette
- 356 Diffuse_Knapweed_seed_head_with_spines
- 357 Diffuse_Knapweed_seed_heads_and_buds
- 358 Dock,_curly
- 359 Dock,_curly;_Rumex_crispus
- 360 Dock,_curly;_Rumex_crispus
- 361 Dodder
- 362 Dodder,_Cuscuta_spp.
- 363 Dodder,_Cuscuta_spp.
- 364 Dodder,_Cuscuta_spp.
- 365 Dodder,_Cuscuta_spp.
- 366 Dodder,_eastern
- 367 Dodder_(Cuscuta_sp.)_
- 368 Dodder_(on_bindweed)_in_orchard
- 369 Dodder_plants_on_weed
- 370 Dodder_seeds
- 371 Dogfennel_(Eupatorium_capillifolium)
- 372 Donkeytail_Spurge,_Euphorbia_myrsinites
- 373 Dotted_Gayfeather,_Liatris_punctata
- 374 Double_thorn_(Polygonaceae,_Oxygonum_sinuatum_Meisn._Dammer)
- 375 Downey_brome_(cheat_grass),_Bromus_tectorum
- 376 Downey_brome_(cheat_grass),_Bromus_tectorum
- 377 Downey_brome_(cheat_grass),_Bromus_tectorum
- 378 Downy_Brome
- 379 Downy_Brome
- 380 Downy_brome,_Bromus tectorum
- 381 Downy_brome,_Bromus_tectorum
- 382 Downy_brome,_Bromus_tectorum
- 383 Downy_brome_in_wheat
- 384 Downy_brome_panicle
- 385 Downy_brome_seeds
- 386 Dwarf_marigold_(Compositae,_Schkuhria_pinnata_Lam._Thell.)
- 387 Eastern_black_(left)_&_hairy_(right)_nightshade_berries
- 388 Eastern_black_nightshade_berries
- 389 Eastern_black_nightshade_berries
- 390 Eastern_black_nightshade_plant
- 391 Eastern_bracken_(Pteridium_aquilinum)
- 392 Echinochloa_crus-galli
- 393 Echinochloa_crus-galli
- 394 Echinochloa_oryzicola
- 395 Eichhornia_crassipes
- 396 Eleocharis_kuroguwai
- 397 Euphorbia_heterophylla
- 398 European_heliotrope
- 399 False_star_grass_(Gramineae,_Chloris_pycnothrix_Trin.)
- 400 Field_Bindweed
- 401 Field_bindweed,_pink-flowered
- 402 field_bindweed_(Convolvulus_arvensis)
- 403 Field_bindweed_+_onion
- 404 Field_bindweed_flowers
- 405 Field_bindweed_in_dry_beans
- 406 Field_bindweed_plants_and_flowers
- 407 Field_bindweed_seed_capsules
- 408 Field_bindweed_seedling_growing_from_seed
- 409 Field_bindweed_seeds
- 410 Field_bindweed_shoot_from_underground_rootstock
- 411 Field_dandbur_(Panicum_pauciflorus)
- 412 Field_Dodder
- 413 Field_Marigold
- 414 Field_Pennycress
- 415 Field_Sandbur
- 416 Field_Sandbur
- 417 Filaree,_redstem;_Erodium_cicutarium
- 418 Filaree,_redstem;_Erodium_cicutarium
- 419 Filaree,_redstem;_Erodium_cicutarium
- 420 Filaree,_redstem;_Erodium_cicutarium
- 421 Fimbristylis_littoralis
- 422 Fleabane,_hairy
- 423 Fleabane_(Compositae,_Conyza_bonariensis_L._Cronq.)
- 424 Flordia_beggarweed_(Desmondium_tortuosum)
- 425 Flordia_beony_(Stachys_floridana)
- 426 Flordia_purslane_-_pusley_(Richardia_scabra)
- 427 Flowering_cabbage_in_carrot
- 428 Foxtail,_bristly
- 429 Foxtail,_bristly;_Setaria_verticillata
- 430 Foxtail,_bristly;_Setaria_verticillata
- 431 Foxtail,_bristly;_Setaria_verticillata
- 432 Foxtail,_bristly;_Setaria_verticillata
- 433 Foxtail,_green
- 434 Foxtail,_green
- 435 Foxtail,_green;_in_dry_beans
- 436 Foxtail,_green;_seeds
- 437 Foxtail,_green;_Setaria_viridis
- 438 Foxtail,_green;_Setaria_viridis
- 439 Foxtail,_green;_Setaria_viridis
- 440 Foxtail,_green;_Setaria_viridis
- 441 Foxtail,_yellow;_Setaria_glauca
- 442 Foxtail_&_other_grasses_in_dry_beans
- 443 Foxtail_(Setaria_sp.)_
- 444 Foxtail_+_onion
- 445 Foxtail_and_sandbur_complex_in_corn
- 446 Foxtail_Barley
- 447 Foxtail_barley
- 448 Foxtail_infestation_in_corn
- 449 Foxtail_millet
- 450 Foxtail_millet
- 451 Foxtails
- 452 Fumitory,_common
- 453 Fumitory,_small_white
- 454 Galerucella_spp.
- 455 Giant_Mullen_and_seed_stalk
- 456 Giant_Mullen_rosette
- 457 Giant_Mullen_seed_head_and_flowers
- 458 Giant_Ragweed
- 459 giant_ragweed_(Ambrosia_trifida)
- 460 Giant_ragweed_plant
- 461 Goat_weed_(Compositae,_Ageratum_conyzoides_L.)
- 462 Goatgrass,_jointed;_Aegilops_cylindrica
- 463 Goatgrass,_jointed;_Aegilops_cylindrica
- 464 Goatgrass,_jointed;_Aegilops_cylindrica
- 465 Goatgrass,_jointed;_Aegilops_cylindrica
- 466 Goatsrue,_Galega_officinalis
- 467 Goatsrue,_Galega_officinalis
- 468 Goatsrue,_Galega_officinalis
- 469 Goatsrue,_Galega_officinalis
- 470 Golden_Banner,_Thermopsis_divaricarpa
- 471 Goldenod_(Solidago_sp.)_
- 472 Goosefoot,_common
- 473 Goosefoot,_nettle-leaved
- 474 Goosegrass
- 475 Goosegrass/Cleavers_(Rubiaceae,_Galium_spurium_L._ssp._africanum_Verdc.)
- 476 goosegrass_(Eleusine_indica)
- 477 Gramineae,_Digitaria_velutina_(Forssk.)_P._Beauv.
- 478 Gramineae,_Eragrostis_tenuifolia_(A._Rich.)_Steud.
- 479 Gramineae,_Setaria_pumila_Poir._Roem_&_Schult.
- 480 Great_Plains_Yucca
- 481 Green_foxtail_in_corn
- 482 Green_foxtail_in_corn
- 483 Green_needlegrass,_basal_leaves
- 484 Green_needlegrass_panicle
- 485 Ground_cherry_in_dry_beans
- 486 Groundcherry,_smooth;_Physalis_subglabrata
- 487 Groundcherry,_smooth;_Physalis_subglabrata
- 488 Groundcherry,_smooth;_Physalis_subglabrata
- 489 Groundsel,_common;_Senecio_vulgaris
- 490 Groundsel,_common;_Senecio_vulgaris
- 491 Groundsel,_common;_Senecio_vulgaris
- 492 Groundsel_(Senecio_sp.)
- 493 Guinea_grass_(Gramineae,_Panicum_maximum_Jacq.)
- 494 Gumweed,_curlycup;_Grindelia_squarrosa
- 495 Gumweed,_curlycup;_Grindelia_squarrosa
- 496 Gumweed,_curlycup;_Grindelia_squarrosa
- 497 Gumweed,_curlycup;_Grindelia_squarrosa
- 498 Hairy_(left),_cutleaf_(center)_and_black_(right)_nightshades
- 499 Hairy_galinsoga_(Galinsoga_ciliata)
- 500 Hairy_nightshade_berries,_immature_with_star_pattern
- 501 Hairy_nightshade_berries_which_do_not_darken
- 502 Hairy_nightshade_flower
- 503 Hairy_nightshade_plant
- 504 Hairy_nightshade_plant
- 505 Hairy_nightshade_seedling
- 506 Hairy_nightshade_seedling
- 507 Hairy_vetch_seeds
- 508 Halogeton
- 509 Halogeton,_Halogeton_glomeratus
- 510 Halogeton,_Halogeton_glomeratus
- 511 Halogeton_plant
- 512 Halogeton_seed_head
- 513 Hartwort,_Egyptian
- 514 Heartleaf_drymary_(Drymaria_cordata)
- 515 Helianthus_annus_sunflower
- 516 Hemlock,_poison;_Conium_maculatum
- 517 Hemlock,_poison;_Conium_maculatum
- 518 Hemlock,_poison;_Conium_maculatum
- 519 Hemlock,_poison;_Conium_maculatum
- 520 Hemlock,_water;_Cicuta_maculata
- 521 Hemlock,_water;_Cicuta_maculata
- 522 Hemlock,_water;_Cicuta_maculata
- 523 Hemlock,_water;_Cicuta_maculata
- 524 Hemp_dogbane_(Apocynum_cannabinum)
- 525 Hemp_sesbania_(Sesbania_exaltata)
- 526 Henbane,_black;_Hyoscyamus_niger
- 527 Henbane,_black;_Hyoscyamus_niger
- 528 Henbane,_black;_Hyoscyamus_niger
- 529 Henbane,_black;_Hyoscyamus_niger
- 530 Henbit,_great_1
- 531 Henbit,_great_2
- 532 Henbit,_Lamium_amplexicaule
- 533 Henbit,_Lamium_amplexicaule
- 534 Henbit_(Lamium_amplexicaule)
- 535 Highland_nutsedge_(Cyperaceae,_Cyperus_rigidifofius_Steud.)
- 536 Hoary_Cress
- 537 Hoary_cress/White_top
- 538 Hoary_Cress_flowers
- 539 Hoary_Cress_infestation
- 540 Hoary_Cress_leaves
- 541 honeyvine_milkweed_(Ampelamus_albidus)
- 542 horsenettle(Solanum_carolinensa)
- 543 horseweed_(Erigeron_canadensis)
- 544 Houndstongue
- 545 Houndstongue
- 546 Houndstongue,_Cynoglossum_officinale
- 547 Houndstongue,_Cynoglossum_officinale
- 548 Houndstongue,_Cynoglossum_officinale
- 549 Houndstongue,_Cynoglossum_officinale
- 550 Houndstongue_rosette
- 551 Houndstongue_seed
- 552 Houndstongue_seed_heads
- 553 Imperata_cylindrica
- 554 Inland_saltgrass
- 555 Ipomoea_hederacea__ivyleaf_morningglory
- 556 Ipomoea_sp._Morningglory
- 557 Itch_grass_(Gramineae,_Rottboellia_cochinchinensis_Lour._W.D._Clayton)
- 558 Japanese_brome_panicle
- 559 Japanese_honeysuckle_(Lonicera_japonica)
- 560 Jimpson_weed_plant_in_dry_bean_field
- 561 Jimpson_weed_seed_pod_and_spines
- 562 Jimpson_weed_seedling_and_cotyledons
- 563 Jimsonweed
- 564 Jimsonweed_(Datura_stramonium)
- 565 Jimsonweed_plant
- 566 Jimsonweed_seed_capsule
- 567 Jimpson_weed_flower
- 568 Johnson_grass
- 569 Johnson_grass_in_dry_beans
- 570 Johnsongrass
- 571 Johnsongrass
- 572 Johnsongrass
- 573 Johnsongrass_(Sorghum_halepense)
- 574 Johnsongrass_(Sorghum_halepense)
- 575 Johnsongrass_*_Sorghum_halepense
- 576 Johnsongrass_*_Sorghum_halepense
- 577 Johnsongrass_*_Sorghum_halepense
- 578 Johnsongrass_in_beans
- 579 Johnsongrass_in_onions
- 580 Johnsongrass_in_onions
- 581 Johnsongrass_in_pole_bean_field
- 582 Johnsongrass_seeds
- 583 Jointed_Goatgrass
- 584 Jointed_goatgrass_cylinders
- 585 Jointed_goatgrass_diagram
- 586 Jointed_goatgrass_in_wheat
- 587 Jointed_goatgrass_infested_with_Russian_wheat_aphid
- 588 Jointed_goatgrass_patch_in_wheat
- 589 Jointed_goatgrass_seedling_in_field
- 590 Jointed_goatgrass_seeds
- 591 Kentucky_bluegrass_panicle
- 592 Kikuyu_grass_(Gramineae,_Pennisetum_clandestinum_Chiov.)
- 593 Knapweed,_diffuse;_Centaurea_diffusa
- 594 Knapweed,_diffuse;_Centaurea_diffusa
- 595 Knapweed,_diffuse;_Centaurea_diffusa
- 596 Knapweed,_diffuse;_Centaurea_diffusa
- 597 Knapweed,_Russian;_Centaurea_repens
- 598 Knapweed,_Russian;_Centaurea_repens
- 599 Knapweed,_Russian;_Centaurea_repens
- 600 Knapweed,_Russian;_Centaurea_repens
- 601 Knapweed,_spotted;_Centaurea_maculosa
- 602 Knapweed,_spotted;_Centaurea_maculosa
- 603 Knapweed,_spotted;_Centaurea_maculosa
- 604 Knapweed,_spotted;_Centaurea_maculosa
- 605 Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
- 606 Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
- 607 Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
- 608 Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
- 609 Knapweed_biocontrol_agents_
- 610 Knotgrass
- 611 Knotgrass_(Polygonaceae,_Polygonum_aviculare_L.)
- 612 Knotweed,_prostrate;_Polygonum_aviculare
- 613 Knotweed,_prostrate;_Polygonum_aviculare
- 614 Knotweed,_prostrate;_Polygonum_aviculare
- 615 Knotweed,_prostrate;_Polygonum_aviculare
- 616 knotweed_(Polygonum_sp.)_
- 617 Kochia
- 618 Kochia
- 619 Kochia,_dense_stand_beneath_mother_plant
- 620 Kochia,_dense_stand_in_spring
- 621 Kochia,_early_stage_in_spring
- 622 Kochia,_green_stem
- 623 Kochia,_Kochia_scoparia
- 624 Kochia,_Kochia_scoparia
- 625 Kochia,_Kochia_scoparia
- 626 Kochia,_Kochia_scoparia
- 627 Kochia,_mature_triazine_resistant_plant
- 628 Kochia,_multiple_side_shoots
- 629 Kochia,_puffball_stage_in_early_spring
- 630 Kochia,_red_flowers
- 631 Kochia,_red_stem
- 632 Kochia,_triazine_resistant_in_corn_field
- 633 Kochia,_yellow_flower_closeup
- 634 Kochia_+_onion
- 635 Kochia_branch_in_full_flower
- 636 Kochia_leaf_shape_and_size_variation
- 637 Kochia_pollen_feeding_by_blister_beetle
- 638 Kochia_pollen_grain_under_SEM
- 639 Kochia_seeds
- 640 kudzu_(Pueraria_lobata)
- 641 Ladysthumb,_Polygonum_persicaria
- 642 Ladysthumb,_Polygonum_persicaria
- 643 Lambsquarter_in_dry_beans
- 644 Lambsquarter_in_onion
- 645 Lambsquarter_seedling
- 646 Lambsquarters,_Chenopodium_album
- 647 Lambsquarters,_Chenopodium_album
- 648 Lambsquarters,_Chenopodium_album
- 649 Lambsquarters,_Chenopodium_album
- 650 Lambsquarters_+_onion
- 651 Lambsquarters_+_spinach_red_rust
- 652 Lambsquarters_+_spinach_red_rust
- 653 Lambsquarters_+_spinach_red_rust
- 654 Lambsquarters_seeds
- 655 Lanceleaf_Sage
- 656 Lanceleaf_sage
- 657 Lanceleaf_sage_plants_in_dry_bean_field
- 658 Lantana_camara,_pink-flowered_form
- 659 Large_barnyardgrass_plant_seed_heads
- 660 Large_crabgrass_(Digitaria_sanguinalis)
- 661 Large_sandbur_plant
- 662 Larkspur,_Delphinium_geyerii
- 663 Late_weed_(Boraginaceae,_Trichodesma_zeylanicum_L._R._Br.)
- 664 Leaf_Spurge_heart-shaped_bracts
- 665 Leafy_Spurge
- 666 Leafy_Spurge,_Canada_Thistle_and_Russian_Knapweed_perennial_roots
- 667 Leafy_Spurge,_flowering
- 668 Leafy_Spurge,_late_flowering
- 669 Leafy_Spurge,_leaf_shape_+_latex
- 670 Leafy_Spurge,_sheep_grazing_for_control
- 671 Leafy_Spurge,_vegetative_reproduction
- 672 Leafy_Spurge,_whole_plant_flowering
- 673 Leafy_Spurge_at_Meeker,_grazed_left,_ungrazed_right
- 674 Leafy_Spurge_field
- 675 Leafy_Spurge_root_crown_and_root_buds
- 676 Leafy_Spurge_seed
- 677 Leafy_spurge_seeds
- 678 Leafy_Spurge_with_yello-green_bracts
- 679 Leptochloa_chinensis
- 680 Liquorice,_common
- 681 little_barley_(Hordeum_pusillum)
- 682 Little_bluestem
- 683 London_rocket
- 684 Love_grass_(Gramineae,_Setaria_verticillata_L._P._Beauv.)
- 685 Low_larkspur,_Delphinium_spp.
- 686 Low_larkspur,_Delphinium_spp.
- 687 Ludwigia_octovalvis
- 688 Ludwigia_prostrata
- 689 Lupine,_Lupinus_spp.
- 690 Lupine,_Lupinus_spp.
- 691 Lupine,_Lupinus_spp.
- 692 Macdonaldi_(Compositae,_Galinsoga_parviflora_Cav.)
- 693 Mallow,_bull
- 694 Mallow_(Malvaceae,_Malva_verticillata_L.)
- 695 Malvaceae,_Sida_acuta_Burm._f.
- 696 Marshelder,_Iva_xanthifolia
- 697 Marshelder,_Iva_xanthifolia
- 698 Marshelder,_Iva_xanthifolia
- 699 Marshelder,_Iva_xanthifolia
- 700 maypop_passionflower_(Passiflora_incarnata)
- 701 mayweed_(Anthemis_cotula)
- 702 Mayweed_(False_Chamomile),_Authemis_cotula
- 703 Mediterranean_Sage
- 704 Mediterranean_Sage
- 705 Mediterranean_Sage,_Salvia_aethiopis
- 706 Mediterranean_Sage_(Gray_Areas)
- 707 Medusahead,_Taeniatherum_caput-medusae
- 708 Medusahead,_Taeniatherum_caput-medusae
- 709 Medusahead,_Taeniatherum_caput-medusae
- 710 Melilot,_indian
- 711 Mercury,_annual
- 712 Mesquite/Yanbut
- 713 Mexican_poppy_(Papaveraceae,_Argemone_mexicana_L.)
- 714 Milk_vetch_seeds
- 715 Milkweed_in_dry_beans
- 716 Mimosa_pigra
- 717 Mistletoe,_oriental
- 718 Monochoria_vaginalis
- 719 Monochoria_vaginalis
- 720 Morningglory_in_beans
- 721 Morningglory_in_onions
- 722 Morningglory_in_onions
- 723 Morningglory
- 724 Morningglory
- 725 Morningglory
- 726 Mouseear_chickweed_(Cerastium_vulgatum)
- 727 Musk_Thistle
- 728 Musk_Thistle,_collection_of_T._horridus_in_infested_weeds
- 729 Musk_Thistle,_infestation_near_Collbran
- 730 Musk_Thistle,_infestation_near_Collbran_3_years_later
- 731 Musk_Thistle_1st-year_rosette
- 732 Musk_Thistle_2nd-year_rosette
- 733 Musk_Thistle_2nd-year_rosette
- 734 Musk_Thistle_flowering_stages
- 735 Musk_thistle_infestation
- 736 Musk_Thistle_infestation
- 737 Musk_Thistle_plant
- 738 Musk_Thistle_stem_and_bud,_spines_on_leaves_and_stem
- 739 Mustard
- 740 Mustard
- 741 Mustard
- 742 Mustard
- 743 Mustard,_black;_Brassica_nigra
- 744 Mustard,_black;_Brassica_nigra
- 745 Mustard,_black;_Brassica_nigra
- 746 Mustard,_black;_Brassica_nigra
- 747 Mustard,_blue;_Chorispora_tenella
- 748 Mustard,_blue;_Chorispora_tenella
- 749 Mustard,_blue;_Chorispora_tenella
- 750 Mustard,_blue;_Chorispora_tenella
- 751 Mustard,_hoary
- 752 Mustard,_pink
- 753 Mustard,_tansy
- 754 Mustard,_tansy
- 755 Mustard,_tansy
- 756 Mustard,_tansy
- 757 Mustard,_tumble;_Sisymbrium_altissimum
- 758 Mustard,_tumble;_Sisymbrium_altissimum
- 759 Mustard,_tumble;_Sisymbrium_altissimum
- 760 Mustard,_tumble;_Sisymbrium_altissimum
- 761 Mustard,_white
- 762 Mustard,_wild/Charlock
- 763 Mustard,_wild;_Brassica_kaber
- 764 Mustard,_wild;_Brassica_kaber
- 765 Mustard,_wild;_Brassica_kaber
- 766 Mustard,_wild;_Brassica_kaber
- 767 Mustard_in_onion
- 768 Narrowleaf_vetch_(Vicia_angustifolia)
- 769 Nettle,_small
- 770 Nightshade
- 771 Nightshade
- 772 Nightshade
- 773 Nightshade,_bittersweet;_Solanum_dulcamara
- 774 Nightshade,_bittersweet;_Solanum_dulcamara
- 775 Nightshade,_bittersweet_(Solanum_dulcamara)
- 776 Nightshade,_cutleaf_(Solanum_triflorum)
- 777 Nightshade,_cutleaf_(Solanum_triflorum)
- 778 Nightshade,_cutleaf_(Solanum_triflorum)
- 779 Nightshade,_hairy_(Solanum_sarrachoides)
- 780 Nightshade,_hairy_(Solanum_sarrachoides)
- 781 Nightshade,_hairy_(Solanum_sarrachoides)
- 782 Nightshade,_hairy_(Solanum_sarrachoides)
- 783 Nightshade_+_onion
- 784 Nightshade_in_dry_beans
- 785 Nightshade_in_dry_beans
- 786 Nightshade_in_dry_beans
- 787 Nightshade_leaf_+_Colorado_potato_beetle_eggs
- 788 Nightshade_seedling_and_first_true_leaves
- 789 Nutsedge
- 790 Nutsedge,_purple
- 791 Nutsedge,_yellow
- 792 Nutsedge,_yellow_(Cyperus_esculentus)
- 793 Nutsedge,_yellow_(Cyperus_esculentus)
- 794 Nutsedge,_yellow_(Cyperus_esculentus)
- 795 Nutsedge,_yellow_(Cyperus_esculentus)
- 796 Nutsedge_in_beans
- 797 Nutsedge_in_onion
- 798 Nutsedge_in_onion
- 799 Nutsedge_plant
- 800 Oats,_wild_(Avena_fatua)
- 801 Oats,_wild_(Avena_fatua)
- 802 Oats,_wild_(Avena_fatua)
- 803 Oats,_wild_(Avena_fatua)
- 804 Olive,_Russian_(Elaegnus_angustifolia)
- 805 Olive,_Russian_(Elaegnus_angustifolia)
- 806 Olive,_Russian_(Elaegnus_angustifolia)
- 807 Olive,_Russian_(Elaegnus_angustifolia)
- 808 Onion,_wild_(Allium_spp.)
- 809 Onion,_wild_(Allium_spp.)
- 810 Oprickly_pear_(puntia_sp.)
- 811 Orache_(Atriplex_patula)
- 812 Orache_(Atriplex_patula)
- 813 Orchardgrass_(Dactylis_glomerata)
- 814 Orchardgrass_(Dactylis_glomerata)
- 815 Orchardgrass_(Dactylis_glomerata)
- 816 Orchardgrass_(Dactylis_glomerata)
- 817 Orchardgrass_panicle
- 818 Oriental_Virgin's_Bower,_Clematis_orientalis
- 819 Orobanche_aegyptiaca
- 820 Orobanche_cernua
- 821 Orobanche_crenata
- 822 Orobanche_ramosa
- 823 Oxalis_(Oxalidaceae,_Oxalis_latifolia_H.B.K.)
- 824 Palestine_chamomile
- 825 Parthenium_hysterophorus_flowering
- 826 Parthenium_hysterophorus_seedling
- 827 Partridge_pea_(Cassia_fasciculata)
- 828 Pennisetum_clandestinum,_flowering_and_vegetative_shoots
- 829 Pennsylvania_smartweed_(Polygonum_pennsylvanicum)
- 830 Pennycress,_field_(Thlaspi_arvense)
- 831 Pennycress,_field_(Thlaspi_arvense)
- 832 Pennycress,_field_(Thlaspi_arvense)
- 833 Pennycress,_field_(Thlaspi_arvense)
- 834 Pennycress_in_winter_wheat
- 835 Pennycress_in_winter_wheat
- 836 Peppervine_(Ampelopsis_arborea)
- 837 Pepperweed,_clasping_(Lepidium_perfoliatum)
- 838 Pepperweed,_clasping_(Lepidium_perfoliatum)
- 839 Pepperweed,_clasping_(Lepidium_perfoliatum)
- 840 Pepperweed,_clasping_(Lepidium_perfoliatum)
- 841 Pepperweed,_perennial_*_(Lepidium_latifolium)
- 842 Pepperweed,_perennial_*_(Lepidium_latifolium)
- 843 Pepperweed,_perennial_*_(Lepidium_latifolium)
- 844 Pepperweed,_perennial_*_(Lepidium_latifolium)
- 845 Perennial_Pepperweed
- 846 Perennial_Pepperweed_seedlings
- 847 Perennial_Sweetpea,_Lathryrus_latifolius
- 848 Perrenial_Pepperweed_infestation_in_pasture
- 849 Pigeongrass_diagram
- 850 Pigeongrass_diagram
- 851 Pigeongrass_diagram
- 852 Pigeongrass_diagram
- 853 Pigeongrass_diagram
- 854 Pigweed,_prostrate
- 855 Pigweed,_prostrate_(Amaranthus_blitoides)
- 856 Pigweed,_prostrate_(Amaranthus_blitoides)
- 857 Pigweed,_prostrate_(Amaranthus_blitoides)
- 858 Pigweed,_prostrate_(Amaranthus_blitoides)
- 859 Pigweed,_redroot_(Amaranthus_retroflexus)
- 860 Pigweed,_redroot_(Amaranthus_retroflexus)
- 861 Pigweed,_redroot_(Amaranthus_retroflexus)
- 862 Pigweed,_redroot_(Amaranthus_retroflexus)
- 863 Pigweed,_white
- 864 Pigweed_+_onion
- 865 Pigweed_in_onions
- 866 Pigweed_plant,_in_dry_beans
- 867 Pimpernel,_blue
- 868 Pimpernel,_scarlet
- 869 Pink_vetch
- 870 Plantain,_broadleaf_(Plantago_major)
- 871 Plantain,_buckhorn_(Plantago_lanceolata)
- 872 Plantain,_buckhorn_(Plantago_lanceolata)
- 873 Plantain,_narrow-leaved/_Ribgrass
- 874 Poison_ivy_(Rhus_radioans)
- 875 Pokeberry_(Phytolacca_americana)
- 876 Polygonum_sp._Smartweed
- 877 Poorjoe_(Diodia_teres)
- 878 Poppy,_corn/Poppy,_field
- 879 Poppy,_prickly_long-headed_1
- 880 Poppy,_prickly_long-headed_2
- 881 Potamogeton_distinctus
- 882 Povertyweed_(Iva_axillaris)
- 883 Povertyweed_(Iva_axillaris)
- 884 Povertyweed_(Iva_axillaris)
- 885 Povertyweed_(Iva_axillaris)
- 886 Prairie_junegrass
- 887 Prairie_sandreed
- 888 Prairie_sandreed,_hairy_ligule
- 889 Prairie_sandreed_panicle
- 890 Prickly_lettuce, Lactuca_serriola
- 891 Prickly_lettuce, Lactuca_serriola
- 892 Prickly_lettuce, Lactuca_serriola
- 893 Prickly_lettuce, Lactuca_serriola
- 894 Prickly_lettuce_1
- 895 Prickly_lettuce_2
- 896 Prickly_Pear_Cactus
- 897 Prickly_Pear_cactus
- 898 Prickly_Pear_Cactus_infestation_of_pasture
- 899 prickly_sida_(sida_spinosa)
- 900 prostrate_vervain_(Verbena_rigida)
- 901 Pubescent_wheatgrass_bunch
- 902 Pubescent_wheatgrass_spikelets
- 903 Puncture_Vine
- 904 Puncture_vine
- 905 Puncture_vine
- 906 Puncture_vine
- 907 Puncture_vine
- 908 Puncture_vine
- 909 Puncture_vine/Caltrops_(Zygophyllaceae,_Tribulus_terrestris_L.)
- 910 Puncture_vine_(Goat's_Head)
- 911 Puncture_vine_(Tribulus_terrestris)
- 912 Puncture_vine_(Tribulus_terrestris)
- 913 Puncture_vine_flower
- 914 Puncture_vine_flowers
- 915 Puncture_vine_plant
- 916 Puncture_vine_plant_and_true_leaf
- 917 Puncture_vine_seed
- 918 Puncture_vine_seed_body_and_spines
- 919 Puncture_vine_seedling
- 920 Puncture_vine_seedling_and_cotyledons
- 921 Puncture_vine_seeds
- 922 Puncturevine_+_onion
- 923 Purple_gooseberry_(Sol_anaceae,_Physalis_philadelphica_Lam.)
- 924 Purple_locoweed
- 925 Purple_Loosestrife
- 926 Purple_Loosestrife
- 927 Purple_loosestrife, Lythrum_salicaria
- 928 Purple_loosestrife, Lythrum_salicaria
- 929 Purple_loosestrife, Lythrum_salicaria
- 930 Purple_loosestrife, Lythrum_salicaria
- 931 Purple_Loosestrife,_Lythrum_salicaria
- 932 Purple_Loosestrife,_Lythrum_salicaria
- 933 Purple_Loosestrife_infestation
- 934 Purple_nutsedge_(Cyperaceae,_Cyperus_rotundus_L.)
- 935 purple_nutsedge_(Cyperus_rotundus)
- 936 Purple_vetch
- 937 Purselane,_common
- 938 Purslane,_common_(Portulaca_oleracea)
- 939 Purslane,_common_(Portulaca_oleracea)
- 940 Purslane,_common_(Portulaca_oleracea)
- 941 Purslane_(Portulacaceae,_Portulaca_oleracea_L.)
- 942 Purslane_+_onion
- 943 Purslane_+_onion
- 944 Purslane_plant
- 945 Purslane_seedling
- 946 Quackgrass_(Elytrigia_repens)
- 947 Quackgrass_(Elytrigia_repens)
- 948 Quackgrass_(Elytrigia_repens)
- 949 Quackgrass_(Elytrigia_repens)
- 950 Quackgrass_seeds
- 951 Queen_Anne's_Lace,_Daucus_carota
- 952 Queen_Anne's_Lace,_Daucus_carota
- 953 Rabbitbrush_(Chrysothamnus_spp.)
- 954 Rabbitbrush_(Chrysothamnus_spp.)
- 955 Rabbitbrush_(Chrysothamnus_spp.)
- 956 Rabbitbrush_(Chrysothamnus_spp.)
- 957 Rabbitfoot_grass_(Polypogon_monspeliensis)
- 958 Rabbitfoot_grass_(Polypogon_monspeliensis)
- 959 Rabbitfoot_grass_(Polypogon_monspeliensis)
- 960 Radish,_wild/White_charlock
- 961 Ragweed,_western_(Ambrosia_psilostachya)
- 962 Ragweed,_western_(Ambrosia_psilostachya)
- 963 Ragweed,_western_(Ambrosia_psilostachya)
- 964 Red_clover_seeds
- 965 Red_sorrel_(Rumex_acetosella)
- 966 Red_Stem_Filaree
- 967 Redroot_Pigweed
- 968 Redroot_pigweed,_2-leaf_stage
- 969 Redroot_pigweed,_cotyledon_stage
- 970 Redroot_pigweed,_intermediate_size
- 971 redroot_pigweed_(Amaranthus_retroflexus)
- 972 Redroot_pigweed_flowering_with_pollen
- 973 Redroot_pigweed_infestation_in_corn_field
- 974 Redroot_pigweed_mixed_with_grass_weeds
- 975 Redroot_pigweed_plant
- 976 Redroot_pigweed_plant_and_seed
- 977 Redstem_filaree_(Erodium_cicutarium)
- 978 Redstem_filaree_in_onion
- 979 redvine_(Brunnichia_cirrhosa)
- 980 Ridolfia_segetum_Moris.
- 981 Rose,_wild_(Rosa_multiflora)
- 982 Rottboellia_cochinchinensis
- 983 Rough_pigweed_seeds
- 984 Russian_Knapweed
- 985 Russian_Knapweed,_7'_deep_root_pit
- 986 Russian_Knapweed,_crown_&_root_section
- 987 Russian_Knapweed,_mature_plant_with_flowers_and_buds
- 988 Russian_Knapweed,_stem_and_leaf_fuzz_or_knap
- 989 Russian_Knapweed_buds_in_April
- 990 Russian_Knapweed_flowering
- 991 Russian_Knapweed_infestation
- 992 Russian_Knapweed_rosette,_vegetative_reproduction
- 993 Russian_Knapweed_rosette_from_root_stock
- 994 Russian_Knapweed_seedling
- 995 Russian_knapweed_seeds
- 996 Russian_Olive,_Eleagnus_angustifolia
- 997 Russian_Thistle_(Tumbleweed)
- 998 Russian_thistle_flower
- 999 Russian_thistle_in_dry_beans
- 1,000 Russian_thistle_in_dry_beans
- 1,001 Russian_thistle_in_dry_beans
- 1,002 Russian_thistle_in_onion
- 1,003 Russian_thistle_plant
- 1,004 Russian_thistle_seedling
- 1,005 Russian_thistle_seedling
- 1,006 Russian_thistle_seedling
- 1,007 Russian_thistle_seeds
- 1,008 Russian_wildrye
- 1,009 Russian_wildrye_bunches
- 1,010 Russian_wildrye_spike
- 1,011 Rye,_feral_(Secale_cereale)
- 1,012 Rye,_feral_(Secale_cereale)
- 1,013 Rye,_feral_(Secale_cereale)
- 1,014 Rye_in_wheat
- 1,015 Rye-grass,_Wymmera
- 1,016 Sage,_Syrian
- 1,017 Sage_in_dry_beans
- 1,018 Sagebrush,_big_(Artemisia_tridentata)
- 1,019 Sagebrush,_big_(Artemisia_tridentata)
- 1,020 Sagittaria_pygmaea
- 1,021 Sagittaria_trifolia
- 1,022 Salsify,_western
- 1,023 Salsify,_western
- 1,024 Saltcedar_(Tamarix_ramosissima)
- 1,025 Saltcedar_(Tamarix_ramosissima)
- 1,026 Saltcedar_(Tamarix_ramosissima)
- 1,027 Saltgrass
- 1,028 Saltgrass_(Distichlis_spicata)
- 1,029 Saltgrass_(Distichlis_spicata)
- 1,030 Saltgrass_(Distichlis_spicata)
- 1,031 Saltgrass_(Distichlis_spicata)
- 1,032 Salvinia_molesta,_closeup_of_plants
- 1,033 Sand_bluestem_raceme
- 1,034 Sandbur
- 1,035 Sandbur
- 1,036 Sandbur
- 1,037 Sandbur_(Cenchrus_incertus)
- 1,038 Sandbur_(Cenchrus_incertus)
- 1,039 Sandbur_(Cenchrus_incertus)
- 1,040 Sandbur_(Cenchrus_incertus)
- 1,041 Sandbur_plant,_medium_sized
- 1,042 Sandbur_seedheads
- 1,043 Sandbur_seedheads
- 1,044 Sandbur_seedling
- 1,045 Sandbur_seedling,_medium_sized
- 1,046 Sandbur_seedlings
- 1,047 Sandbur_seeds
- 1,048 Sandbur_seeds
- 1,049 Sandbur_weed
- 1,050 Sandbur_with_purple_color_at_base_of_plant
- 1,051 Scarlet_Globe_Mallow
- 1,052 Scarlet_Globe_Mallow
- 1,053 Scarlet_Globe_Mallow
- 1,054 Scarlet_Globe_Mallow
- 1,055 Scarlet_Globe_Mallow
- 1,056 Scarlet_Globe_Mallow
- 1,057 Scirpus_juncoides
- 1,058 Scirpus_maritimus
- 1,059 Scotch_Thistle
- 1,060 Scotch_Thistle
- 1,061 Scotch_Thistle_flower_and_bud
- 1,062 Scouringrush_(Equisetum_hyemale)
- 1,063 Scouringrush_(Equisetum_hyemale)
- 1,064 Scouringrush_(Equisetum_hyemale)
- 1,065 Scouringrush_(Equisetum_hyemale)
- 1,066 Sea_beet
- 1,067 Sedge_seed_head
- 1,068 Setaria_faberi_giant_foxtail
- 1,069 Setaria_spp._Foxtail
- 1,070 Shattercane
- 1,071 Shattercane_in_corn
- 1,072 Shattercane_in_corn
- 1,073 Shattercane_plant
- 1,074 Shattercane_seed_head
- 1,075 Shepherd's_purse_in_flower
- 1,076 Shepherds_needle
- 1,077 Shepherd's_purse_(Capsella_bursa-pastoris)
- 1,078 Shepherd's_purse_(Capsella_bursa-pastoris)
- 1,079 Shepherd's_purse_(Capsella_bursa-pastoris)
- 1,080 Shepherd's_purse_(Capsella_bursa-pastoris)
- 1,081 Shepherd's_purse_(Cruciferae,_Capsella_bursa-pastoris_L._Medic.)
- 1,082 Shepherd's_purse_1
- 1,083 Shepherd's_purse_2
- 1,084 shepherdspurse_(Capsella_bursa-pastoris)
- 1,085 showy_crotalaria_(Crotalaria_spectabilis)
- 1,086 Showy_milkweed,_Asclepias_speciosa
- 1,087 Showy_milkweed,_Asclepias_speciosa
- 1,088 Showy_milkweed,_Asclepias_speciosa
- 1,089 Showy_milkweed,_Asclepias_speciosa
- 1,090 sicklepod_(Cassia_obtusifolia)
- 1,091 Sideoats_grama
- 1,092 Sideoats_grama
- 1,093 Sideoats_grama_spike
- 1,094 Silver_Sage,_Artemisia_frigida
- 1,095 Silverleaf_nightshade_(Solanum_elaeagnifolium)
- 1,096 Skeletonleaf_Bursage
- 1,097 Skeletonleaf_Bursage_root_system
- 1,098 Skeletonleaf_seed_head
- 1,099 Skeletonleaf_seedling
- 1,100 Skeletonweed,_rush_(Chondrilla_juncea)
- 1,101 Skeletonweed,_rush_(Chondrilla_juncea)
- 1,102 Smallflower_morningglory_(Jaquemontia_tamnifolia)
- 1,103 Smooth_brome
- 1,104 Smooth_brome_ligule
- 1,105 Smooth_brome_panicle
- 1,106 Smooth_brome_rhizome
- 1,107 Smooth_groundcherry
- 1,108 Smooth_groundcherry_(Physalis_subglabrata)
- 1,109 Smooth_pigweed_(Amaranthaceae,_Amaranthus_hybridus_L.)
- 1,110 Snakeweed,_broom_(Gutierrezia_sarothrae)
- 1,111 Sodon_apple_(Sol_anaceae,_Solanum_incanum_L.)
- 1,112 Solanum_ptycanthum;_black_nightshade
- 1,113 Solanum_ptycanthum;_black_nightshade
- 1,114 Sorghum_halepense,_shoot_base_and_young_rhizome
- 1,115 Sow_thistle_(Compositae,_Sonchus_oleraceus_L.)
- 1,116 Sowthistle,_annual_(Sonchus_oleraceus)
- 1,117 Sowthistle,_annual_(Sonchus_oleraceus)
- 1,118 Sowthistle,_annual_(Sonchus_oleraceus)
- 1,119 Sowthistle,_annual_(Sonchus_oleraceus)
- 1,120 Sowthistle,_perennial_(Sonchus_arvensis)
- 1,121 Sowthistle,_perennial_(Sonchus_arvensis)
- 1,122 Sowthistle,_perennial_(Sonchus_arvensis)
- 1,123 Sowthistle,_perennial_(Sonchus_arvensis)
- 1,124 sowthistle_(Sonchus_sp.)_
- 1,125 Spanish_needles_(Bidens_bipinnata)
- 1,126 Speedwell,_bilobed_(Veronica_biloba)
- 1,127 Speedwell,_bilobed_(Veronica_biloba)
- 1,128 Speedwell,_white
- 1,129 Sphenoclea_zeylanica
- 1,130 Spider_flower_(Capparaceae,_Gynandropsis_gynandra_L._Briq.)
- 1,131 spiny_amarnth_(Amaranthus_spinosus)
- 1,132 Spotted_Knapweed
- 1,133 Spotted_Knapweed
- 1,134 Spotted_Knapweed
- 1,135 Spotted_Knapweed
- 1,136 Spotted_Knapweed
- 1,137 Spotted_Knapweed
- 1,138 Spotted_Knapweed_flowers
- 1,139 Spotted_Knapweed_infestation_and_alleopathic_effects
- 1,140 Spotted_Knapweed_rosette
- 1,141 Spotted_Knapweed_seed_head_with_black_bracts
- 1,142 spotted_spurge_(Euphorbia_maculata)
- 1,143 Spurge,_blue_(Euphorbia_myrsinites)
- 1,144 Spurge,_blue_(Euphorbia_myrsinites)
- 1,145 Spurge,_blue_(Euphorbia_myrsinites)
- 1,146 Spurge,_leafy_(Euphorbia_esula)
- 1,147 Spurge,_leafy_(Euphorbia_esula)
- 1,148 Spurge,_leafy_(Euphorbia_esula)
- 1,149 Spurge,_leafy_(Euphorbia_esula)
- 1,150 Spurge,_petty
- 1,151 Spurge,_prostrate_(Euphorbia_spp.)
- 1,152 Spurge,_prostrate_(Euphorbia_spp.)
- 1,153 Spurge,_prostrate_(Euphorbia_spp.)
- 1,154 Spurge,_prostrate_(Euphorbia_spp.)
- 1,155 Spurge,_sun
- 1,156 Spurge,_toothed_(Euphorbia_dentata)
- 1,157 Spurge,_toothed_(Euphorbia_dentata)
- 1,158 Spurge,_toothed_(Euphorbia_dentata)
- 1,159 Spurge,_toothed_(Euphorbia_dentata)
- 1,160 Spurred_Anoda
- 1,161 Spurred_anoda_seed_capsule
- 1,162 Spurred_anoda_seedlings_and_cotyledons
- 1,163 Spurred_anoda_seedlings_and_cotyledons
- 1,164 Spurred_anoda_with_flower
- 1,165 Spurrey_(Caryophyllaceae,_Spergula_arvensis_L.)
- 1,166 Squirreltail
- 1,167 St._Johnswort
- 1,168 St._Johnswort
- 1,169 St._Johnswort,_Hypericum_perforatum
- 1,170 St._Johnswort_(Hypericum_perforatum)
- 1,171 St._Johnswort_(Hypericum_perforatum)
- 1,172 St._Johnswort_(Hypericum_perforatum)
- 1,173 St._Johnswort_(Hypericum_perforatum)
- 1,174 St._Johnswort_flower
- 1,175 St._Johnswort_flowers
- 1,176 St._Johnswort_leaves_with_holes
- 1,177 St_John's_wort,_curled_leaved
- 1,178 Star_grass_(Gramineae,_Cynodon_nlemfuensis_Vanderyst)
- 1,179 Starbur_(Compositae,_Acanthospermum_hispidum_DC.)
- 1,180 Starthistle,_yellow_(Centaurea_solstitialis)
- 1,181 Starthistle,_yellow_(Centaurea_solstitialis)
- 1,182 Starthistle,_yellow_(Centaurea_solstitialis)
- 1,183 Starthistle,_yellow_(Centaurea_solstitialis)
- 1,184 Stinkgrass_(Eragrostis_cilianensis)
- 1,185 Stinkgrass_panicle
- 1,186 Stonecrop,_Sedum_lanceolaatum
- 1,187 Striate_Knotweed
- 1,188 Striated_knotweed_plant
- 1,189 Striga/Purple_witchweed_(Scrophulariaceae,_Striga_hermonthica_Del._Benth.)
- 1,190 Striga/Red_witchweed_(Scrophulariaceae,_Striga_asiatica_L._Kuntze)
- 1,191 Striga_asiatica
- 1,192 Striga_aspera
- 1,193 Striga_gesnerioides
- 1,194 Striga_hermonthica
- 1,195 Sudangrass_seeds
- 1,196 Sunflower,_wild_(Helianthus_annuus)
- 1,197 Sunflower,_wild_(Helianthus_annuus)
- 1,198 Sunflower,_wild_(Helianthus_annuus)
- 1,199 Sunflower,_wild_(Helianthus_annuus)
- 1,200 Sweetclover_(Melilotus_spp.)
- 1,201 Sweetclover_(Melilotus_spp.)
- 1,202 Sweetclover_(Melilotus_spp.)
- 1,203 Sweetclover_(Melilotus_spp.)
- 1,204 Swinecress_(Coronopus_didymus)
- 1,205 Switch_grass
- 1,206 Switch_grass
- 1,207 Switchgrass
- 1,208 Switchgrass_panicle
- 1,209 Sword_grass
- 1,210 Swordgrass_(Gramineae,_Imperata_cylindrica_L._Raeuschel)
- 1,211 Syrian_scabious
- 1,212 Tall_fescue_patches_in_irrigated_pasture
- 1,213 Tall_khaki_weed_/Mexican_marigold(Compositae,_Tagetes_minuta_L.)
- 1,214 Tall_larkspur_(Delphinium_spp.)
- 1,215 Tall_larkspur_(Delphinium_spp.)
- 1,216 Tall_morningglory_(Ipomoea_purpurea)
- 1,217 Tall_wheatgrass_spikelets
- 1,218 Tansy,_common_(Tanacetum_vulgare)
- 1,219 Tansy,_common_(Tanacetum_vulgare)
- 1,220 Tansy_Mustard
- 1,221 Teasel_(Dipsacus_laciniatus)
- 1,222 Teasel_(Dipsacus_laciniatus)
- 1,223 Teasel_(Dipsacus_laciniatus)
- 1,224 Teasel_(Dipsacus_laciniatus)
- 1,225 Texas_panicum_(Panicum_texanum)
- 1,226 Thistle,_bull_(Cirsium_vulgare)
- 1,227 Thistle,_bull_(Cirsium_vulgare)
- 1,228 Thistle,_bull_(Cirsium_vulgare)
- 1,229 Thistle,_bull_(Cirsium_vulgare)
- 1,230 Thistle,_Canada_(Cirsium_arvense)
- 1,231 Thistle,_Canada_(Cirsium_arvense)
- 1,232 Thistle,_Canada_(Cirsium_arvense)
- 1,233 Thistle,_Canada_(Cirsium_arvense)
- 1,234 Thistle,_musk_(Carduus_nutans)
- 1,235 Thistle,_musk_(Carduus_nutans)
- 1,236 Thistle,_musk_(Carduus_nutans)
- 1,237 Thistle,_musk_(Carduus_nutans)
- 1,238 Thistle,_pale_star_1
- 1,239 Thistle,_pale_star_2
- 1,240 Thistle,_Russian_(Salsola_iberica)
- 1,241 Thistle,_Russian_(Salsola_iberica)
- 1,242 Thistle,_Russian_(Salsola_iberica)
- 1,243 Thistle,_Russian_(Salsola_iberica)
- 1,244 Thistle,_Scotch_(Onopordum_acanthium)
- 1,245 Thistle,_Scotch_(Onopordum_acanthium)
- 1,246 Thistle,_Scotch_(Onopordum_acanthium)
- 1,247 Thistle,_sow
- 1,248 Thistle_head
- 1,249 Thorn_apple_(Sol_anaceae,_Datura_stramonium_L.)
- 1,250 Three-awn
- 1,251 Three-awn_flowering_head
- 1,252 Timothy_flowering_head
- 1,253 Toadflax,_dalmation_(Linaria_dalmatica)
- 1,254 Toadflax,_dalmation_(Linaria_dalmatica)
- 1,255 Toadflax,_dalmation_(Linaria_dalmatica)
- 1,256 Toadflax,_dalmation_(Linaria_dalmatica)
- 1,257 Toadflax,_yellow_(Linaria_vulgaris)
- 1,258 Toadflax,_yellow_(Linaria_vulgaris)
- 1,259 Toadflax,_yellow_(Linaria_vulgaris)
- 1,260 Toadflax,_yellow_(Linaria_vulgaris)
- 1,261 Toothed_leaf_spurge_plant
- 1,262 Toothed_Spurge
- 1,263 Toothed_spurge,_2-leaf_stage_+_cotyledon
- 1,264 Toothed_spurge,_flower_and_seed_pod
- 1,265 Toothed_spurge,_medium_size
- 1,266 Toothed_spurge_+_onion
- 1,267 Toothed_spurge_in_dry_beans
- 1,268 Toothed_spurge_in_dry_beans
- 1,269 Toothed_spurge_rust
- 1,270 Toothed_spurge_seedling
- 1,271 Torpedograss_(Panicum_repens)
- 1,272 Tropic_croton_(Croton_glandulosus)
- 1,273 Trumpetcreeper_(Campsis_radicans)
- 1,274 Tumble_pigweed_+_onion
- 1,275 Vaseygrass_(Paspalum_urvillei)
- 1,276 Velvetleaf
- 1,277 Velvetleaf_&_pigweed_in_bean_field
- 1,278 Velvetleaf_(Abutilon_theophrasti)
- 1,279 Velvetleaf_(Abutilon_theophrasti)
- 1,280 Velvetleaf_(Abutilon_theophrasti)
- 1,281 Velvetleaf_(Abutilon_theophrasti)
- 1,282 Velvetleaf_+_onion
- 1,283 Velvetleaf_in_bean_field
- 1,284 Velvetleaf_in_large_corn
- 1,285 Velvetleaf_in_waste_area_in_Morgan_County
- 1,286 Velvetleaf_plant
- 1,287 Velvetleaf_plant_and_seed_capsule
- 1,288 Velvetleaf_plants_in_small_corn
- 1,289 Velvetleaf_seed_capsule
- 1,290 Velvetleaf_seedling
- 1,291 Velvetleaf_seedling
- 1,292 Venice_Mallow
- 1,293 Venice_mallow,_Hibiscus_trionum
- 1,294 Venice_mallow,_Hibiscus_trionum
- 1,295 Venice_mallow,_Hibiscus_trionum
- 1,296 Venice_mallow_+_onion
- 1,297 Venice_mallow_flower
- 1,298 Venice_mallow_plant
- 1,299 Venice_mallow_seedling
- 1,300 Venice_mallow_seedlings_in_onion_field
- 1,301 Venive_mallow,_Hibiscus_trionum
- 1,302 Vetch,_broad-leaved
- 1,303 Violet,_English_(Viola_odorata)
- 1,304 Virginia_copperleaf_(Acalypha_virginica)
- 1,305 Virginia_Ground_Cherry
- 1,306 Virginia_pepperweed_(Lepidium_virginicum)
- 1,307 Volunteer_corn_in_dry_beans
- 1,308 Volunteer_Field_Corn
- 1,309 Volunteer_Rye
- 1,310 Volunteer_rye
- 1,311 Volunteer_rye_in_wheat
- 1,312 Volunteer_rye_in_wheat
- 1,313 Volunteer_rye_overtops_wheat
- 1,314 Volunteer_rye_seed
- 1,315 Volunteer_rye_seedlings
- 1,316 Volunteer_rye-wheat_competition
- 1,317 Wandering_jew_(Commelinaceae,_Commehna_benghalensis_L.)
- 1,318 Warm-season_bunchgrasses
- 1,319 Watergrass_(Cyperaceae,_Cyperus_blysmoides_C.B._CI.)
- 1,320 Western_Salsify
- 1,321 Western_Salsify
- 1,322 Western_salsify_flowers
- 1,323 Western_salsify_flowers
- 1,324 Western_wheatgrass
- 1,325 Western_wheatgrass_(lt)_&_thickspike_wheatgrass_(rt)
- 1,326 Western_wheatgrass_patch
- 1,327 Western_wheatgrass_patch
- 1,328 Western_wheatgrass_spike
- 1,329 White_locoweed
- 1,330 White_Sweetclover,_Melilotus_alba
- 1,331 White_top_seeds
- 1,332 White-flowered_field_bindweed
- 1,333 Whiteheath_aster_(Aster_pilosus)
- 1,334 Wild_Buckwheat
- 1,335 Wild_buckwheat_seedling
- 1,336 Wild_buckwheat_seedling
- 1,337 Wild_buckwheat_seeds
- 1,338 Wild_carrot
- 1,339 Wild_carrot_(Daucus_carota)
- 1,340 Wild_cucumber_(Echinocystis_lobata)
- 1,341 Wild_finger_millet_(Gramineae,_Eleusine_indica_L._Gaertn.)
- 1,342 Wild_garlic_(Allum_vineale)
- 1,343 Wild_lettuce_(Compositae,_Launaea_cornuta_Oliv._&_Hiern_C._Jeffrey)
- 1,344 Wild_lettuce_(Lactuna_scariola)
- 1,345 Wild_Mustard
- 1,346 Wild_mustard_(Brussica_kaber)
- 1,347 Wild_mustard_plant
- 1,348 Wild_oat_(Gramineae,_Avena_fatua_L.)
- 1,349 Wild_oat_1
- 1,350 Wild_oat_2
- 1,351 Wild_oat_diagram
- 1,352 Wild_oats_seeds
- 1,353 Wild_Proso_Millet
- 1,354 Wild_proso_millet,_Panicum_miliaceum
- 1,355 Wild_proso_millet,_Panicum_miliaceum
- 1,356 Wild_proso_millet,_Panicum_miliaceum
- 1,357 Wild_proso_millet,_Panicum_miliaceum
- 1,358 Wild_proso_millet_heading_dates
- 1,359 Wild_proso_millet_in_corn
- 1,360 Wild_proso_millet_infestation_in_corn
- 1,361 Wild_proso_millet_overgrowing_corn
- 1,362 Wild_proso_millet_plants_in_corn
- 1,363 Wild_proso_millet_seeds
- 1,364 Wild_proso_millet_setting_seed_in_corn
- 1,365 Wild_raddish/White_charlock_(Cruciferae,_Raphanus_raphanistrum_L.)
- 1,366 Wild_rye_in_winter_wheat
- 1,367 Wild_rye_in_winter_wheat
- 1,368 Wild_Sunflower
- 1,369 Wild_sunflower_in_dry_beans
- 1,370 Wild_sunflower_seeds
- 1,371 Wild_sunflowers_in_dry_beans
- 1,372 Wild_watermelon_-_citron_(Citrullus_vulgaris)
- 1,373 Willowweed_(Epilobium_spp.)
- 1,374 Willowweed_(Epilobium_spp.)
- 1,375 Winged_pea,_Palestine
- 1,376 Witchgrass
- 1,377 Witchgrass_(Panicum_capillare)
- 1,378 Witchgrass_(Panicum_capillare)
- 1,379 Witchweed
- 1,380 witchweed_(Striga_lutea)
- 1,381 Woad,_dyer's_(Isatis_tinctoria)
- 1,382 Woad,_dyer's_(Isatis_tinctoria)
- 1,383 Woad,_dyer's_(Isatis_tinctoria)
- 1,384 Woad,_dyer's_(Isatis_tinctoria)
- 1,385 Wood_sorrel,_yellow
- 1,386 Woodsorrel,_yellow_(Oxalis_stricta)
- 1,387 Woodsorrel,_yellow_(Oxalis_stricta)
- 1,388 Woodsorrel,_yellow_(Oxalis_stricta)
- 1,389 Wooly_croton_(Croton_capitatus)
- 1,390 Xanthium_strumarium_common_cocklebur
- 1,391 Xanthium_strumarium_common_cocklebur
- 1,392 Yellow,_green,_and_giant_foxtail_heads
- 1,393 Yellow_Indiangrass
- 1,394 Yellow_nutsedge
- 1,395 Yellow_nutsedge
- 1,396 Yellow_nutsedge
- 1,397 Yellow_nutsedge
- 1,398 Yellow_nutsedge
- 1,399 Yellow_nutsedge
- 1,400 Yellow_nutsedge
- 1,401 Yellow_nutsedge_(Cyperaceae,_Cyperus_esculentus_L.)
- 1,402 Yellow_nutsedge_(Cyperus_esculentus)
- 1,403 Yellow_nutsedge_in_drybeans
- 1,404 Yellow_sweet_clover
- 1,405 Yellow_Sweetclover,_Melilotus_officinalis
- 1,406 Yellow_Toadflax
- 1,407 Yellow_Toadflax
- 1,408 Yellow_Toadflax
- 1,409 Yellow_Toadflax,_Linaria_vulgaris
- 1,410 Yellow_Toadflax_leaf_shape
- 1,411 Yellow_Toadflax_with_butter/egg_look_of_flowers
- 1,412 Yellow_Toadflax_with_root
- 1,413 Yellow_vetch
- 1,414 Yellow_vetchling
- 1,415 Yerba-de-tago_(Eclipta_alba)
2_Jointed_goatgrass_plants_from_1_seed_cylinder
2 Jointed goatgrass plants from 1 seed cylinder (P. Westra, Colorado State University)
2_Leaf_wild_proso_millet_seedling_1
2 Leaf wild proso millet seedling (P. Westra, Colorado State University)
4_Leaf_wild_proso_millet_seedling_2
4 Leaf wild proso millet seedling (P. Westra, Colorado State University)
Abutilon_theophrasti_velvetleaf
Abutilon theophrasti velvetleaf (seedling)
Abutilon_theophrasti_velvetleaf
Abutilon theophrasti velvetleaf (infested field)
Acanthaceae,_Asystasia_schimperi_T._Anders.
Acanthaceae, Asystasia schimperi T. Anders. (FAW)
(Drawing)
Alkali_grass
Alkali grass (Lair, Colorado State University)
Alkanet,_large_blue
Alkanet, large blue; Anchusa azurea Miller; Anchusa italica Retz.; Hemhem; Khail (FNE)
Amaranth,_common
Amaranth, common; Amaranthus retroflexus L.; Common amaranth; Urf ed-dik (FNE)
Amaranth,_green
Amaranth, green; Amaranthus chlorostachys Willd.; Amaranthus hybridus L.; Green amaranth (FNE)
Amaranth_2
Amaranth (H. F. Schwartz, Colorado State University)
Amaranth_3
Amaranth (H. F. Schwartz, Colorado State University)
Amaranth_6
Amaranth (H. F. Schwartz, Colorado State University)
Amaranthaceae,_Amaranthus_graecizans_L.
Amaranthaceae, Amaranthus graecizans L. (FAW) )
(Drawing)
Amaranthus_sp._Pigweed
Amaranthus sp. Pigweed (seedling)
Amaranthus_sp._Pigweed
Amaranthus sp. Pigweed (infested field)
Ambrosia_artemisiifolia_common_ragweed
Ambrosia artemisiifolia common ragweed (seedling)
Ambrosia_artemisiifolia_common_ragweed
Ambrosia artemisiifolia common ragweed (infested field)
American_black_nightshade_plant
American black nightshade plant (P. Westra, Colorado State University)
Amutgrass_(Sporoblus_poiretii)
Amutgrass (Sporoblus poiretii)
Aneilema_japonica
Aneilema japonica (FRW)
Annual_bluegrass_(Poa_annua)
Annual bluegrass (Poa annua)
Annual_fleabane_(Erigeron_annuus)
Annual fleabane (Erigeron annuus)
Aster,_purple_(Machaeranthera_canescens)_1
Aster, purple (Machaeranthera canescens); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Aster,_purple_(Machaeranthera_canescens)_2
Aster, purple (Machaeranthera canescens); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Aster,_purple_(Machaeranthera_canescens)_3
Aster, purple (Machaeranthera canescens); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Asthma_weed_(Euphorbiaceae,_Euphorbia_hirta_L.)
Asthma weed (Euphorbiaceae, Euphorbia hirta L.)(FAW) )
(Drawing)
Barley,_foxtail_(Hordeum_jubatum)_adult
Barley, foxtail (Hordeum jubatum); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Barley,_foxtail_(Hordeum_jubatum)_flower
Barley, foxtail (Hordeum jubatum); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
Barley,_mouse/wall
Barley, mouse; Barley, wall; Hordeum murinum L.; Mouse barley; Wall barley (FNE)
Barnyard_grass_(Echinochloa_crus-galli)
Barnyard grass (Echinochloa crus-galli); flower (Turf) (Steven Dewey, Utah State University)
Barnyard_grass_(Echinochloa_crus-galli)
Barnyard grass (Echinochloa crus-galli); seedling (Turf) (Steven Dewey, Utah State University)
Barnyard_grass_(Echinochloa_crus-galli)
Barnyard grass (Echinochloa crus-galli); seedling (Turf) (Steven Dewey, Utah State University)
Barnyard_grass_(Echinochloa_crus-galli)
Barnyard grass (Echinochloa crus-galli); adult (Turf) (Steven Dewey, Utah State University)
Barnyard_grass_1
Abu-rukbah; Barnyard grass; Echinochloa colonum (L.)Link. (FNE)
Barnyard_grass_2
Barnyard grass (H. F. Schwartz, Colorado State University)
Barnyard_grass_3
Barnyard grass seeds (H. F. Schwartz, Colorado State University)
Barnyard_grass_4
Barnyard grass (Lair, Colorado State University)
Barnyard_grass_in_beans
Barnyard grass in beans (H. F. Schwartz, Colorado State University)
Barnyard_grass_seedhead
Barnyard grass seedhead (Lair, Colorado State University)
Barnyard_grass_seedling
Barnyard grass seedling (P. Westra, Colorado State University)
Barnyardgrass_(Echinochloa_crus-galli)
Barnyardgrass (Echinochloa cru-sgalli)
Barnyardgrass_+_onion
Barnyardgrass + onion (H. F. Schwartz, Colorado State University)
Barnyardgrass_seedling,_medium_sized
Barnyardgrass seedling, medium sized (P. Westra, Colorado State University)
Bedstraw,_rough
Bedstraw, rough; Dobbeyk; Edhairjeh; Galium tricorne Stokes.; Galium tricornutum Dandy; Rough bedstraw (FNE)
Bee_Balm,_Monaida_fistulosa
Bee Balm, Monaida fistulosa (L. L. Berry, Colorado State University)
Beggarweed_in_dry_beans
Beggarweed in dry beans (H. F. Schwartz, Colorado State University)
Bermuda_grass/Star_grass
Bermuda grass; Cynodon dactylon (L.)Pers.; Najil; Razzin; Star grass; Theil (FNE)
Bermudagrass_(Cynodon_dactylon)
Bermudagrass (Cynodon dactylon)
Bermudagrass_*_(Cynodon_dactylon)
Bermudagrass * (Cynodon dactylon); adult (Turf) (Steven Dewey, Utah State University)
Bermudagrass_*_(Cynodon_dactylon)
Bermudagrass * (Cynodon dactylon); [crabgrass - left; bermudagrass - right] florets (Turf) (Steven Dewey, Utah State University)
Bermudagrass_*_(Cynodon_dactylon)
Bermudagrass * (Cynodon dactylon); leaf (Turf) (Steven Dewey, Utah State University)
Bermudagrass_*_(Cynodon_dactylon)
Bermudagrass * (Cynodon dactylon); roots (Turf) (Steven Dewey, Utah State University)
Big_bluestem
Big bluestem (Lair, Colorado State University)
Big_bluestem_racemes
Big bluestem racemes (Lair, Colorado State University)
Big_Sagebrush
Big Sagebrush (H. F. Schwartz, Colorado State University)
bigroot_morningglory_(Ipomoea_pandurata)
bigroot morningglory (Ipomoea pandurata)
Bindweed,_field
Bindweed, field; Convolvulus arvensis L.; Field bindweed (FNE)
Bindweed,_field_*_(Convolvulus_arvensis)
Bindweed, field * (Convolvulus arvensis); seed, leaf (Turf) (Steven Dewey, Utah State University)
Bindweed,_field_*_(Convolvulus_arvensis)
Bindweed, field * (Convolvulus arvensis); flowers (Turf) (Steven Dewey, Utah State University)
Bindweed,_field_*_(Convolvulus_arvensis)
Bindweed, field * (Convolvulus arvensis); flowers (Turf) (Steven Dewey, Utah State University)
Bindweed,_field_*_(Convolvulus_arvensis)
Bindweed, field * (Convolvulus arvensis); seedling (Turf) (Steven Dewey, Utah State University)
Bindweed,_mallow-leaved
Bindweed, mallow-leaved; Convolvulus althaeoides L.; Convolvulus elegantissimus Miller; Convolvulus tenuissimus Sibth. &Sm. ; Mallow-leaved bindweed; Muddedeh (FNE)
Bindweed,_shaggy
Bindweed, shaggy; Convolvulus betonicifolius Mill.; Convolvulus hirsutus Bieb.; Shaggy bindweed (FNE)
Bindweed_+_onion
Bindweed + onion (H. F. Schwartz, Colorado State University)
Bindweed_field
Bindweed field (L. L. Berry, Colorado State University)
Bindweed_flower
Bindweed flower (L. L. Berry, Colorado State University)
Bindweed_vine
Bindweed vine (L. L. Berry, Colorado State University)
Bindweed_with_arrow-shaped_leaves
Bindweed with arrow-shaped leaves (L. L. Berry, Colorado State University)
Birdsfoot_trefoil
Birdsfoot trefoil (H. F. Schwartz, Colorado State University)
Bitter_sneezeweed(Helenium_amarum)
Bitter sneezeweed(Helenium amarum)
Black_bindweed_(Polygonaceae,_Fallopia_convolvulus_L._A._Love)
Black bindweed (Polygonaceae Fallopia convolvulus (L.)A. Love)(FAW) )
(Drawing)
Black_medic,_Medicago_lupulina
Black medic adult, Medicago lupulina (Turf) (Steven Dewey, Utah State University)
Black_medic,_Medicago_lupulina
Black medic flower, Medicago lupulina (Turf) (Steven Dewey, Utah State University)
Black_nightshade
Black nightshade; Inab el Deeb; Solanum nigrum L. (FNE)
Black_nightshade_(Sol_anaceae,_Solanum_nigrum_L.)
Black nightshade (Sol anaceae, Solanum nigrum L.)(FAW) )
(Drawing)
Black_nightshade_(Solanum_nigrum)
Black nightshade (Solanum nigrum)
Black-awned_wheat
Black-awned wheat (H. F. Schwartz, Colorado State University)
Blackberry_(Rubus_sp.)_
Blackberry (Rubus sp.)
Blackjack_(Compositae,_Bidens_pilosa_L.)
Blackjack (Compositae, Bidens pilosa L.)(FAW) )
(Drawing)
Bladder_campion
Bladder campion; Campium, bladder; Silene cububalis Wibel.; Silene inflata Sm.; Silene latifolia (Miller)Britten & Rendle; Silene vulgaris (Moench.)Garcke. (FNE)
Blessed_thistle_(Cnicus_benedictus)
Blessed thistle (Cnicus benedictus)
Blue_couch/Couch_grass_(Gramineae,_Digitaria_abyssinica_A._Rich._Stapf)
Blue couch/Couch grass (Gramineae, Digitaria abyssinica (A. Rich.)Stapf (FAW) )
(Drawing)
Blue_grama
Blue grama (Lair, Colorado State University)
Blue_grama_raceme
Blue grama raceme (Lair, Colorado State University)
Blue_vervain_(Verbena_hastata)_
Blue vervain (Verbena hastata)
Blue_woodruff
Asperula arvensis L.; Blue woodruff (FNE)
Bluegrass,_annual_(Poa_annua)
Bluegrass, annual (Poa annua); adult (Turf) (Steven Dewey, Utah State University)
Bluegrass,_bulbous_(Poa_bulbosa)
Bluegrass, bulbous (Poa bulbosa); adult (Dryland Crops) (Steven Dewey, Utah State University)
Bluegrass,_bulbous_(Poa_bulbosa)
Bluegrass, bulbous (Poa bulbosa); adult (Dryland Crops) (Steven Dewey, Utah State University)
Bluegrass,_bulbous_(Poa_bulbosa)
Bluegrass, bulbous (Poa bulbosa); flower (Dryland Crops) (Steven Dewey, Utah State University)
Bluegrass,_bulbous_(Poa_bulbosa)
Bluegrass, bulbous (Poa bulbosa); flower (Dryland Crops) (Steven Dewey, Utah State University)
Bouncing_Bet
Bouncing Bet (L. L. Berry, Colorado State University)
Bouncing_Bet,_Saponaria_officinalis
Bouncing Bet, Saponaria officinalis (L. L. Berry, Colorado State University)
Bracted_plantain_(Plantago_aristata)
Bracted plantain (Plantago aristata)
Bristly_starbur_(Acanthospemum_hispidum)
Bristly starbur (Acanthospemum hispidum)
Broadleaf_dock_(Rumex_obtusifolius)
Broadleaf dock (Rumex obtusifolius)
Broadleaf_plantain_(Plantago_major)
Broadleaf plantain (Plantago major)
Broadleaf_signalgrass_(Brachiaria_platyphylla)
Broadleaf signalgrass (Brachiaria platyphylla)
Broadleaf_weed_in_onion
Broadleaf weed in onion (H. F. Schwartz, Colorado State University)
Broadleaf_weed_in_pole_bean_field
Broadleaf weed in pole bean field (H. F. Schwartz, Colorado State University)
Brome,_barren
Barren brome; Brome, barren; Bromus sterilis L. (FNE)
Brome,_downy
Brome, downy; Bromus tectorum L.; Downy brome (FNE)
Brome,_downy_(Bromus_tectorum)
Brome, downy (Bromus tectorum); adult (Dryland Crops) (Steven Dewey, Utah State University)
Brome,_downy_(Bromus_tectorum)
Brome, downy (Bromus tectorum); flower (Dryland Crops) (Steven Dewey, Utah State University)
Brome,_downy_(Bromus_tectorum)
Brome, downy (Bromus tectorum); ligule (Dryland Crops); (Steven Dewey, Utah State University)
Brome,_downy_(Bromus_tectorum)
Brome, downy (Bromus tectorum); seedling (Dryland Crops) (Steven Dewey, Utah State University)
Brome_grass_(Gramineae,_Bromus_pectinatus_Thunb.)
Brome grass (Gramineae, Bromus pectinatus Thunb.)(FAW) )
(Drawing)
Bromegrass_seeds
Bromegrass seeds (H. F. Schwartz, Colorado State University)
Broomrape,_branched
Branched broomrape; Broomrape, branched; Orobanche rarnosa L.; Phelypaea ramosa (L.)C.A.Meyer (FNE)
Broomrape,_drooping
Broomrape, drooping; Drooping broomrape; Orobanche cemua Loefl.; Orobanche cumana Wallr. (FNE)
Broomrape,_Egyptian
Broomrape, Egyptian; Egyptian broomrape; Orobanche aegyptiaca Pers.; Phelypaea aegyptiaca (Pers.)Walpers. (FNE)
Broomrape,_scalloped
Broomrape, scalloped; Orobanche crenata Forsk.; Orobanche speciosa DC.; Scalloped broomrape (FNE)
Broomsedge_(Andropogon_virginicus)
Broomsedge (Andropogon virginicus)
Buckhorn_plantain_(Plantago_lanceolata)
Buckhorn plantain (Plantago lanceolata)
Buckhorn_plantain_seeds
Buckhorn plantain seeds (H. F. Schwartz, Colorado State University)
Buckwheat,_wild_(Polygonum_convolvulus)
Buckwheat, wild (Polygonum convolvulus); flowers, leaves (Yard and Garden) (Steven Dewey, Utah State University)
Buckwheat,_wild_(Polygonum_convolvulus)
Buckwheat, wild (Polygonum convolvulus); adult (Yard and Garden) (Steven Dewey, Utah State University)
Buckwheat,_wild_(Polygonum_convolvulus)
Buckwheat, wild (Polygonum convolvulus); flower, leaf, seeds (Yard and Garden) (Steven Dewey, Utah State University)
Buckwheat_plants
Buckwheat plants (G. Y. Frissoe, Colorado State University)
Buckwheat_seedling
Buckwheat seedling (S. J. Nissen, Colorado State University)
Buffalo_Bur
Buffalo Bur (H. F. Schwartz, Colorado State University)
Buffalo_Bur
Buffalo Bur (L. L. Berry, Colorado State University)
Buffalo_bur_,_Solanum_rostratum
Buffalo bur adult, Solanum rostratum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Buffalo_bur_,_Solanum_rostratum
Buffalo bur fruit, Solanum rostratum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Buffalo_bur_,_Solanum_rostratum
Buffalo bur flower and leaf, Solanum rostratum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Buffalo_bur_adult
Buffalo bur adult (G. Y. Frissoe, Colorado State University)
Buffalo_bur_in_dry_beans
Buffalo bur in dry beans (H. F. Schwartz, Colorado State University)
Buffalo_bur_in_dry_beans
Buffalo bur in dry beans (H. F. Schwartz, Colorado State University)
Buffalo_bur_plant
Buffalo bur plant (P. Westra, Colorado State University)
Buffalo_bur_plant_and_flower
Buffalo bur plant and flower (P. Westra, Colorado State University)
Buffalo_bur_seed
Buffalo bur seed (L. L. Berry, Colorado State University)
Buffalo_bur_seedling
Buffalo bur seedling (G. Y. Frissoe, Colorado State University)
Buffalograss
Buffalograss (Lair, Colorado State University)
Bull_Thistle
Bull Thistle (L. L. Berry, Colorado State University)
Bull_Thistle_infestation_of_rangeland
Bull Thistle infestation of rangeland (L. L. Berry, Colorado State University)
Bull_Thistle_leaf_and_spines
Bull Thistle leaf and spines (L. L. Berry, Colorado State University)
Bull_Thistle_rosette
Bull Thistle rosette (L. L. Berry, Colorado State University)
Bullwort/Common_bishops_weed
Bullwort/Common bishops weed, Ammi majus L. (FNE)
Bur_buttercup,_Ranunculus_testiculatus
Bur buttercup adult and flower, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)
Bur_buttercup,_Ranunculus_testiculatus
Bur buttercup adult and fruit, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)
Bur_buttercup,_Ranunculus_testiculatus
Bur buttercup fruit, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)
Bur_buttercup,_Ranunculus_testiculatus
Bur buttercup seedling, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)
Burclover/Medick,_toothed
Burclover; Medicago denticulata Wild.; Medicago hispida Gaertner; Medicago lappacea Desr.; Medicago nigra (L.)Krocker; Medicago polycarpa Wild; Medicago polymorpha L.; Medick, toothed; Nafal; Toothed medick (FNE)
Burcucumber(Sicyos_angulatus)
Burcucumber(Sicyos angulatus)
Burdock,_Arctium_minus
Burdock adult, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)
Burdock,_Arctium_minus
Burdock flower, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)
Burdock,_Arctium_minus
Burdock fruit, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)
Burdock,_Arctium_minus
Burdock seedling, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)
Bushy_Knotweed
Bushy Knotweed (H. F. Schwartz, Colorado State University)
Bushy_knotweed_plant
Bushy knotweed plant (G. Y. Frissoe, Colorado State University)
Buttercup,_corn
Buttercup, corn; Corn buttercup; Ranunculus arvensis L.; Zaghalanta (FNE)
buttercup_(Ranunculus_sp.)_
buttercup (Ranunculus sp.)
butterfly_milkweed_(Asclepias_tuberosa)
butterfly milkweed (Asclepias tuberosa)
Calyx_details_on_nightshade_berries
Calyx details on nightshade berries (P. Westra, Colorado State University)
camphorweed_(Heterotheca_subaxillaris)
camphorweed (Heterotheca subaxillaris)
Canada_Thistle
Canada Thistle (H. F. Schwartz, Colorado State University)
Canada_thistle
Canada thistle (H. F. Schwartz, Colorado State University)
Canada_thistle
Canada thistle (H. F. Schwartz, Colorado State University)
Canada_thistle
Canada thistle (H. F. Schwartz, Colorado State University)
Canada_thistle
Canada thistle (L. L. Berry, Colorado State University)
Canada_Thistle,_early_flowering
Canada Thistle, early flowering (L. L. Berry, Colorado State University)
Canada_Thistle,_mature_plant
Canada Thistle, mature plant (L. L. Berry, Colorado State University)
Canada_thistle,_seeds
Canada thistle, seeds (H. F. Schwartz, Colorado State University)
Canada_thistle_adults
Canada thistle adults (G. Y. Frissoe, Colorado State University)
Canada_Thistle_bud_and_flower
Canada Thistle bud and flower (L. L. Berry, Colorado State University)
Canada_Thistle_early_bud
Canada Thistle early bud (K. G. Beck, Colorado State University)
Canada_Thistle_flowering
Canada Thistle flowering (K. G. Beck, Colorado State University)
Canada_thistle_in_growing_corn
Canada thistle in growing corn (P. Westra, Colorado State University)
Canada_Thistle_leaf,_spines_and_waxy_cuticle
Canada Thistle leaf, spines and waxy cuticle (K. G. Beck, Colorado State University)
Canada_Thistle_mid_to_late_bloom
Canada Thistle mid to late bloom (K. G. Beck, Colorado State University)
Canada_Thistle_post-bloom_seed_set
Canada Thistle post-bloom seed set (K. G. Beck, Colorado State University)
Canada_Thistle_rosette
Canada Thistle rosette (L. L. Berry, Colorado State University)
Canada_Thistle_seedling
Canada thistle seedling (P. Westra, Colorado State University)
Canada_Thistle_seedling
Canada Thistle seedling (G. Y. Frissoe, Colorado State University)
Canada_Thistle_treated_with_Pseudomonas
Canada Thistle treated with Pseudomonas (K. G. Beck, Colorado State University)
Canary_grass,_bristle-spiked/hood
Bristle- spiked canary grass; Canary grass, bristle-spiked; Canary grass, hood; Hood canary grass; Phalaris paradoxa L. (FNE)
Canary_grass,_lesser
Canary grass, lesser; 'Ain-al-qott; Lesser canary grass; Phalaris minor Retz.; Shaeer-al-faar (FNE)
Cape_sorrel
Cape sorrel; Oxalis cemua Thunb.; Oxalis pes-caprae L. (FNE)
Carolina_falsedanelion_(Pyrropappus_carolinianus)
Carolina falsedanelion (Pyrropappus carolinianus)
Carolina_geranium_(Geranium_carolinianum)
Carolina geranium (Geranium carolinianum)
Carpetweed_(Mullugo_verticillata)
Carpetweed (Mullugo verticillata)
Castor_bean
Castor bean (H. F. Schwartz, Colorado State University)
Catchfly,_conoid
Catchfly, conoid; Conoid catchfly; Silene conoidea L. (FNE)
Catnip,_Nepeta_cataria
Catnip adult, Nepeta cataria (Pasture/Rangeland) (Steven Dewey, Utah State University)
Catnip,_Nepeta_cataria
Catnip leaf, Nepeta cataria (Pasture/Rangeland) (Steven Dewey, Utah State University)
Cattail,_Typha_latifolia
Cattail adult, Typha latifolia (Wildland/Recreation) (Steven Dewey, Utah State University)
Cattail,_Typha_latifolia
Cattail flower and leaf, Typha latifolia (Wildland/Recreation) (Steven Dewey, Utah State University)
Cattail,_Typha_latifolia
Cattail flower and leaf, Typha latifolia (Wildland/Recreation) (Steven Dewey, Utah State University)
Cattails
Cattails (H. F. Schwartz, Colorado State University)
Cattails
Cattails (H. F. Schwartz, Colorado State University)
Cheese-weed/Mallow
Cheese-weed; Mallow; Malva parviflora L. (FNE)
Chenopodiaceae,_Chenopodium_tourale_L.
Chenopodiaceae, Chenopodium tourale L. (FAW) )
(Drawing)
Chenopodium_album_common_lambsquarters
Chenopodium album common lambsquarters (seedling)
Chenopodium_album_common_lambsquarters
Chenopodium album common lambsquarters (infected field)
Chickweed,_common
Chickweed, common; Athen el far; Common chickweed; Stellaria media (L.)Vill. (FNE)
Chickweed,_common;_Stellaria_media
Chickweed, common; adult; Stellaria media (Turf) (Steven Dewey, Utah State University)
Chickweed,_common;_Stellaria_media
Chickweed, common; [common - left; mouse ear - right] flowers; Stellaria media (Turf) (Steven Dewey, Utah State University)
Chickweed,_common;_Stellaria_media
Chickweed, common; [common - left; mouse ear - right] flower, leaf; Stellaria media (Turf) (Steven Dewey, Utah State University)
Chickweed,_mouseear;_Cerastium_vulgatum
Chickweed, mouseear; adult; Cerastium vulgatum (Turf) (Steven Dewey, Utah State University)
Chickweed,_mouseear;_Cerastium_vulgatum
Chickweed, mouseear; flower; Cerastium vulgatum (Turf) (Steven Dewey, Utah State University)
Chickweed_(Caryophyllaceae,_Stellaria_media_L._VIII.)
Chickweed (Caryophyllaceae, Stellaria media (L.)VIII.)(FAW) )
(Drawing)
Chickweed_(Stollaria_media)
Chickweed (Stollaria media)
Chicory,_Chichorium_intybus
Chicory, Chichorium intybus (L. L. Berry, Colorado State University)
Chicory,_Chichorium_intybus
Chicory, Chichorium intybus (L. L. Berry, Colorado State University)
Chicory,_Cichorium_intybus
Chicory adult, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)
Chicory,_Cichorium_intybus
Chicory field, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)
Chicory,_Cichorium_intybus
Chicory flower, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)
Chicory,_Cichorium_intybus
Chicory seedling, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)
Chinese_lantern_(Sol_anaceae,_Nicandra_physalodes_Scop.)
Chinese lantern (Sol anaceae, Nicandra physalodes Scop.)(FAW) )
(Drawing)
Chk
Chk (Colorado State University)
Chk
Chk (Colorado State University)
Chromolaena_odorata
Chromolaena odorata (FAO_MTG)
Clammy_groundcherry
Clammy groundcherry (G. Y. Frissoe, Colorado State University)
Clover
Clover (H. F. Schwartz, Colorado State University)
Clover,_white;_Trifolium_repens
Clover, white; adult; Trifolium repens (Turf) (Steven Dewey, Utah State University)
Cocklebur
Cocklebur; Shobbe't; Xanthium strumarium L. (FNE)
Cocklebur,_spiny
Cocklebur, spiny; Shobbeit; Spiny cocklebur; Xanthium spinosum L. (FNE)
Cocklebur,_Xanthium_strumarium
Cocklebur flower, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)
Cocklebur,_Xanthium_strumarium
Cocklebur seedling, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)
Cocklebur,_Xanthium_strumarium
Cocklebur stem, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)
Cocklebur,_Xanthium_strumarium
Cocklebur adult, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)
Cocklebur_in_beans
Cocklebur in beans (H. F. Schwartz, Colorado State University)
Columbine_Hybrid,_Aguilegia_sp.
Columbine Hybrid, Aguilegia sp. (L. L. Berry, Colorado State University)
Common_Cattail
Common Cattail (H. F. Schwartz, Colorado State University)
Common_Cocklebur
Common Cocklebur (H. F. Schwartz, Colorado State University)
Common_cocklebur_(Xanthium_pennyslvanicum)
common cocklebur (Xanthium pennyslvanicum)
Common_cocklebur_adult
Common cocklebur adult (G. Y. Frissoe, Colorado State University)
Common_cocklebur_flower
Common cocklebur flower (P. Westra, Colorado State University)
Common_cocklebur_seedling
Common cocklebur seedling (R. G. Wilson, Colorado State University)
Common_cocklebur_seedling_with_2-true_leaves
Common cocklebur seedling with 2-true leaves (P. Westra, Colorado State University)
common_greenbriar_(Smilax_rotundifolia)
common greenbriar (Smilax rotundifolia)
Common_Knotweed
Common Knotweed (H. F. Schwartz, Colorado State University)
Common_knotweed_plant
Common knotweed plant (G. Y. Frissoe, Colorado State University)
Common_Lambsquarter,_2-leaf_stage
Common Lambsquarter, 2-leaf stage (P. Westra, Colorado State University)
Common_Lambsquarters
Common Lambsquarters (H. F. Schwartz, Colorado State University)
common_lambsquarters_(Chenopodium_album)
common lambsquarters (Chenopodium album)
Common_Mallow
Common Mallow (H. F. Schwartz, Colorado State University)
Common_mallow
Common mallow (H. F. Schwartz, Colorado State University)
Common_mallow
Common mallow (P. Westra, Colorado State University)
Common_Mallow
Common mallow; Mallow, common; Malva sylvestris L. (FNE)
Common_mallow,_Malva_neglecta
Common mallow adult, Malva neglecta (Turf) (Steven Dewey, Utah State University)
Common_mallow,_Malva_neglecta
Common mallow leaf, Malva neglecta (Turf) (Steven Dewey, Utah State University)
Common_mallow,_Malva_neglecta
Common mallow leaf,seed,flower; Malva neglecta (Turf) (Steven Dewey, Utah State University)
Common_mallow,_Malva_neglecta
Common mallow seedling, Malva neglecta (Turf) (Steven Dewey, Utah State University)
Common_mallow_+_onion
Common mallow + onion (H. F. Schwartz, Colorado State University)
Common_mallow_+_onion
Common mallow + onion (H. F. Schwartz, Colorado State University)
Common_mallow_plant_and_flower
Common mallow plant and flower (G. Y. Frissoe, Colorado State University)
Common_mallow_seedling
Common mallow seedling (G. Y. Frissoe, Colorado State University)
Common_Milkweed
Common Milkweed (H. F. Schwartz, Colorado State University)
Common_milkweed
Common milkweed (H. F. Schwartz, Colorado State University)
Common_milkweed_plant
Common milkweed plant (P. Westra, Colorado State University)
Common_Morningglory
Common Morningglory (H. F. Schwartz, Colorado State University)
Common_mullein,_Verbascum_thapsus
Common mullein adult, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Common_mullein,_Verbascum_thapsus
Common mullein leaf, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Common_mullein,_Verbascum_thapsus
Common mullein seedling, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Common_mullein,_Verbascum_thapsus
Common mullein flower, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
common_mullein_(Verbascum_thapsus)
common mullein (Verbascum thapsus)
common_purselane_(Portulaca_oleracea)
common purselane (Portulaca oleracea)
Common_Purslane
Common Purslane (H. F. Schwartz, Colorado State University)
Common_purslane
Common purslane (M. E. Bartolo, Colorado State University)
Common_purslane
Common purslane (M. E. Bartolo, Colorado State University)
Common_purslane
Common purslane (Mark VanGessel, Colorado State University)
Common_purslane_plant_in_flower
Common purslane plant in flower (P. Westra, Colorado State University)
Common_purslane_plant_in_onion_field
Common purslane plant in onion field (P. Westra, Colorado State University)
[1]
Common_purslane_seedling
Common purslane seedling (P. Westra, Colorado State University)
Common_purslane_seedling
Common purslane seedling (P. Westra, Colorado State University)
common_ragweed_(Ambrosia_artemisiifolia)
common ragweed (Ambrosia artemisiifolia)
Common_sunflower,_cotyledons_visible
Common sunflower, cotyledons visible (P. Westra, Colorado State University)
Common_sunflower_plant
Common sunflower plant (P. Westra, Colorado State University)
Common_sunflower_plants
Common sunflower plants (H. F. Schwartz, Colorado State University)
Common_sunflower_seedling
Common sunflower seedling (G. Y. Frissoe, Colorado State University)
Common_sunflower_seedling
Common sunflower seedling (P. Westra, Colorado State University)
Common_Waterhemp
Common Waterhemp (H. F. Schwartz, Colorado State University)
Common_waterhemp_plant
Common waterhemp plant (G. Y. Frissoe, Colorado State University)
Common_yarrow_(Achillea_millefolum)
Common yarrow (Achillea millefolum)
Common_yellow_woodsorrel_(Oxalis_stricta)
Common yellow woodsorrel (Oxalis stricta)
Compositae,_Gutenbergia_cordifolia_Benth._ex_Oliv.
Compositae, Gutenbergia cordifolia Benth. ex Oliv. (FAW) )
(Drawing)
Compositae,_Sphaeranthus_bullatus_Mattf.
Compositae, Sphaeranthus bullatus Mattf. (FAW) )
(Drawing)
Convolvulus_arvensis
Convolvulus arvensis (FAO_MTG)
Corn_cockle_(Agrostemma_githago)
Corn cockle (Agrostemma githago)
Cornflower_(Centaurea_cyanus)
Cornflower (Centaurea cyanus)
Crabgrass
Crabgrass; Dafeerah; Digitaria sanguinalis (L.)Scop. (FNE)
Crabgrass,_Digitaria_sanguinalis
Crabgrass adult, Digitaria sanguinalis (Turf) (Steven Dewey, Utah State University)
Crabgrass,_Digitaria_sanguinalis
Crabgrass flower, Digitaria sanguinalis (Turf) (Steven Dewey, Utah State University)
Crabgrass,_Digitaria_sanguinalis
Crabgrass in Kentucky bluegrass, Digitaria sanguinalis (Turf) (Steven Dewey, Utah State University)
Cranes-bill
Cranes-bill; Geranium tuberosum L. (FNE)
Crazyweed,_Oxytropis_lambertii
Crazyweed, Oxytropis lambertii (L. L. Berry, Colorado State University)
Cress,_hoary;_Cardaria_draba
Cress, hoary; adult; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)
Cress,_hoary;_Cardaria_draba
Cress, hoary; flower; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)
Cress,_hoary;_Cardaria_draba
Cress, hoary; leaf; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)
Cress,_hoary;_Cardaria_draba
Cress, hoary; roots; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)
Crested_wheatgrass
Crested wheatgrass (H. F. Schwartz, Colorado State University)
Crested_wheatgrass
Crested wheatgrass (H. F. Schwartz, Colorado State University)
Crested_wheatgrass
Crested wheatgrass (H. F. Schwartz, Colorado State University)
Crested_wheatgrass
Crested wheatgrass (R. F. Jepson, Colorado State University)
Croton
Croton; Chrozophora tinctoria (L.)A.Juss.; Ghobbeira; Hadak; Neela (FNE)
Crowfootgrass_(Dactyloctenium_aegyptium)
Crowfootgrass (Dactyloctenium aegyptium)
Crows-foot_grass_(Gramineae,_Dactyloctenium_aegyptium_L._Willd.)
Crows-foot grass (Gramineae, Dactyloctenium aegyptium (L.)Willd.)(FAW) )
(Drawing)
Cruciferae,_Erucastrum_arabicum_Fisch._&_Mey.
Cruciferae, Erucastrum arabicum Fisch. & Mey. (FAW) )
(Drawing)
Cudweed_(Gnaphalium_sp.)
Cudweed (Gnaphalium sp.)
Curled_dock_seeds
Curled dock seeds (H. F. Schwartz, Colorado State University)
Curly_dock_(Rumex_crispus)
Curly dock (Rumex crispus)
Curse_of_India/Lantana_(Verbenaceae,_Lantana_camara_L.)
Curse of India/Lantana (Verbenaceae, Lantana camara L.)(FAW) )
(Drawing)
Cuscuta_campestris
Cuscuta campestris (FAO_MTG)
Cuscuta_japonica_flowering
Cuscuta japonica flowering (FAO_MTG)
Cuscuta_japonica_vegetative_shoots
Cuscuta japonica vegetative shoots (FAO_MTG)
Cuscuta_sp._Dodder
Cuscuta sp. Dodder (infested plant in China)
Ccutleaf_eveningprimrose_(Oenothera_laciniata)
Cutleaf eveningprimrose (Oenothera laciniata)
Cutleaf_nightshade_plant
Cutleaf nightshade plant (P. Westra, Colorado State University)
Cyperaceae,_Cyperus_teneristolon_Mattf._&_Kuk.
Cyperaceae, Cyperus teneristolon Mattf. & Kuk.(FAW)
(Drawing)
Cyperus_difformis
Cyperus difformis (FRW)
Cyperus_esculentus_yellow_nutsedge
Cyperus esculentus yellow nutsedge (seedling)
Cyperus_esculentus_yellow_nutsedge
Cyperus esculentus yellow nutsedge (infested field)
Cyperus_iria
Cyperus iria (FRW)
Cyperus_rotundus
Cyperus rotundus (FRW)
Cyperus_serotinus
Cyperus serotinus (FRW)
Cypressvine_morningglory_(Ipomoea_quamoclit)
Cypressvine morningglory (Ipomoea quamoclit)
Daisy,_crown
Daisy, crown; Chrysanthemum coronarium L. ; Crown daisy; Qhewan (FNE)
Dalmation_Toadflax
Dalmation Toadflax (H. F. Schwartz, Colorado State University)
Dalmation_Toadflax
Dalmation Toadflax (L. L. Berry, Colorado State University)
Dalmation_Toadflax
Dalmation Toadflax (L. L. Berry, Colorado State University)
Dalmation_Toadflax,_Linaria_genistifolia
Dalmation Toadflax, Linaria genistifolia (L. L. Berry, Colorado State University)
Dalmation_Toadflax_flower
Dalmation Toadflax flower (K. G. Beck, Colorado State University)
Dalmation_Toadflax_habitat
Dalmation Toadflax habitat (K. G. Beck, Colorado State University)
Dalmation_Toadflax_leaf_shape
Dalmation Toadflax leaf shape (K. G. Beck, Colorado State University)
Dalmation_Toadflax_leaves_and_flowers
Dalmation Toadflax leaves and flowers (L. L. Berry, Colorado State University)
Dalmation_Toadflax_vegetative_regrowth_in_spring
Dalmation Toadflax vegetative regrowth in spring (K. G. Beck, Colorado State University)
Dalmation_Toadflax_with_sworled_leaves
Dalmation Toadflax with sworled leaves (L. L. Berry, Colorado State University)
Dame's_Rocket,_Hesperis_matroualis
Dame's Rocket, Hesperis matroualis (L. L. Berry, Colorado State University)
Dame's_Rocket_(Boulder_County)
Dame's Rocket (Boulder County) (L. L. Berry, Colorado State University)
Dandelion
Dandelion (H. F. Schwartz, Colorado State University)
Dandelion,_Taraxacum_officinale
Dandelion adult, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)
Dandelion,_Taraxacum_officinale
Dandelion flower, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)
Dandelion,_Taraxacum_officinale
Dandelion flower, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)
Dandelion,_Taraxacum_officinale
Dandelion field, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)
dandelion_(Taraxacum_officinale)
dandelion (Taraxacum officinale)
Dandelion_in_beans
Dandelion in beans (H. F. Schwartz, Colorado State University)
Dandelion_in_onion
Dandelion in onion (H. F. Schwartz, Colorado State University)
Dandelions
Dandelions (H. F. Schwartz, Colorado State University)
Datura_stramonium_jimsonweed
Datura stramonium jimsonweed (seedling)
Dature_meteloides
Dature meteloides (fully grown plant)
dayflower_(Commelina_communis)
dayflower (Commelina communis)
Delea_clover_seeds
Delea clover seeds (H. F. Schwartz, Colorado State University)
Devil's_Claw
Devil's Claw (H. F. Schwartz, Colorado State University)
Devil's_claw
Devil's claw (H. F. Schwartz, Colorado State University)
Devil's_claw_flower
Devil's claw flower (H. F. Schwartz, Colorado State University)
Devil's_claw_flower
Devil's claw flower (H. F. Schwartz, Colorado State University)
Devil's_thorn_(Polygonaceae,_Emex_australis_Steinh.)
Devil's thorn (Polygonaceae, Emex australis Steinh.)(FAW) )
(Drawing)
Dichondra_(Dichondra_repens)
Dichondra (Dichondra repens)
Diffuse_Knapweed
Diffuse Knapweed (H. F. Schwartz, Colorado State University)
Diffuse_Knapweed_flower
Diffuse Knapweed flower (L. L. Berry, Colorado State University)
Diffuse_Knapweed_flowering
Diffuse Knapweed flowering (K. G. Beck, Colorado State University)
Diffuse_Knapweed_rosette
Diffuse Knapweed rosette (L. L. Berry, Colorado State University)
Diffuse_Knapweed_rosette
Diffuse Knapweed rosette (K. G. Beck, Colorado State University)
Diffuse_Knapweed_seed_head_with_spines
Diffuse Knapweed seed head with spines (L. L. Berry, Colorado State University)
Diffuse_Knapweed_seed_heads_and_buds
Diffuse Knapweed seed heads and buds (L. L. Berry, Colorado State University)
Dock,_curly
Curly dock; Dock, curly; Rumex crispus L. (FNE)
Dock,_curly;_Rumex_crispus
Dock, curly; adult; Rumex crispus (Pasture/Rangeland) (Steven Dewey, Utah State University)
Dock,_curly;_Rumex_crispus
Dock, curly; adult; Rumex crispus (Pasture/Rangeland) (Steven Dewey, Utah State University)
Dodder
Dodder; Cuscuta arvensis; Cuscuta basarabica Buia.; Cuscuta carnpestris Yuncker; (FNE)
Dodder,_Cuscuta_spp.
Dodder adult, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)
Dodder,_Cuscuta_spp.
Dodder adult, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)
Dodder,_Cuscuta_spp.
Dodder flower, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)
Dodder,_Cuscuta_spp.
Dodder leaf, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)
Dodder,_eastern
Dodder, eastern; Cuscuta monogyna Vahl. (FNE)
Dodder_(Cuscuta_sp.)_
Dodder (Cuscuta sp.)
Dodder_(on_bindweed)_in_orchard
Dodder (on bindweed)in orchard (H. J. Larsen, Colorado State University)
Dodder_plants_on_weed
Dodder plants on weed (H. F. Schwartz, Colorado State University)
Dodder_seeds
Dodder seeds (H. F. Schwartz, Colorado State University)
Dogfennel_(Eupatorium_capillifolium)
Dogfennel (Eupatorium capillifolium)
Donkeytail_Spurge,_Euphorbia_myrsinites
Donkeytail Spurge, Euphorbia myrsinites (L. L. Berry, Colorado State University)
Dotted_Gayfeather,_Liatris_punctata
Dotted Gayfeather, Liatris punctata (L. L. Berry, Colorado State University)
Double_thorn_(Polygonaceae,_Oxygonum_sinuatum_Meisn._Dammer)
Double thorn (Polygonaceae Oxygonum sinuatum (Meisn.)Dammer)(FAW) )
(Drawing)
Downey_brome_(cheat_grass),_Bromus_tectorum
Downey brome (cheat grass), Bromus tectorum (H. F. Schwartz, Colorado State University)
Downey_brome_(cheat_grass),_Bromus_tectorum
Downey brome (cheat grass), Bromus tectorum (H. F. Schwartz, Colorado State University)
Downey_brome_(cheat_grass),_Bromus_tectorum
Downey brome (cheat grass), Bromus tectorum (H. F. Schwartz, Colorado State University)
Downy_Brome
Downy Brome (H. F. Schwartz, Colorado State University)
Downy_Brome
Downy Brome (L. L. Berry, Colorado State University)
Downy_brome,_Bromus tectorum
Downy brome, Bromus tectorum (P. Westra, Colorado State University)
Downy_brome,_Bromus_tectorum
Downy brome, Bromus tectorum (Lair, Colorado State University)
Downy_brome,_Bromus_tectorum
Downy brome, Bromus tectorum (P. Westra, Colorado State University)
Downy_brome_in_wheat
Downy brome in wheat (P. Westra, Colorado State University)
Downy_brome_panicle
Downy brome panicle (Lair, Colorado State University)
Downy_brome_seeds
Downy brome seeds (H. F. Schwartz, Colorado State University)
Dwarf_marigold_(Compositae,_Schkuhria_pinnata_Lam._Thell.)
Dwarf marigold (Compositae, Schkuhria pinnata (Lam.)Thell.)(FAW) )
(Drawing)
Eastern_black_(left)_&_hairy_(right)_nightshade_berries
Eastern black (left)& hairy (right)nightshade berries (P. Westra, Colorado State University)
Eastern_black_nightshade_berries
Eastern black nightshade berries (P. Westra, Colorado State University)
Eastern_black_nightshade_berries
Eastern black nightshade berries (G. Y. Frissoe, Colorado State University)
Eastern_black_nightshade_plant
Eastern black nightshade plant (G. Y. Frissoe, Colorado State University)
Eastern_bracken_(Pteridium_aquilinum)
Eastern bracken (Pteridium aquilinum)
Echinochloa_crus-galli
Echinochloa crus-galli (FAO_MTG)
Echinochloa_crus-galli
Echinochloa crus-galli (FRW)
Echinochloa_oryzicola
Echinochloa oryzicola (FRW)
Eichhornia_crassipes
Eichhornia crassipes (FAO_MTG)
Eleocharis_kuroguwai
Eleocharis kuroguwai (FRW)
Euphorbia_heterophylla
Euphorbia heterophylla (FAO_MTG)
European_heliotrope
European heliotrope; Agrabanah; Heliotropium europaeum L. (FNE)
False_star_grass_(Gramineae,_Chloris_pycnothrix_Trin.)
False star grass (Gramineae, Chloris pycnothrix Trin.)(FAW) )
(Drawing)
Field_Bindweed
Field Bindweed (H. F. Schwartz, Colorado State University)
Field_bindweed,_pink-flowered
Field bindweed, pink flowered (P. Westra, Colorado State University)
field_bindweed_(Convolvulus_arvensis)
field bindweed (Convolvulus arvensis)
Field_bindweed_+_onion
Field bindweed + onion (H. F. Schwartz, Colorado State University)
Field_bindweed_flowers
Field bindweed flowers (H. F. Schwartz, Colorado State University)
Field_bindweed_in_dry_beans
Field bindweed in dry beans (H. F. Schwartz, Colorado State University)
Field_bindweed_plants_and_flowers
Field bindweed plants and flowers (H. F. Schwartz, Colorado State University)
Field_bindweed_seed_capsules
Field bindweed seed capsules (P. Westra, Colorado State University)
Field_bindweed_seedling_growing_from_seed
Field bindweed seedling growing from seed (P. Westra, Colorado State University)
Field_bindweed_seeds
Field bindweed seeds (H. F. Schwartz, Colorado State University)
Field_bindweed_shoot_from_underground_rootstock
Field bindweed shoot from underground rootstock (P. Westra, Colorado State University)
Field_dandbur_(Panicum_pauciflorus)
Field dandbur (Panicum pauciflorus)
Field_Dodder
Field Dodder (H. F. Schwartz, Colorado State University)
Field_Marigold
' Field marigold; Calendula arvensis L.; Marigold, field (FNE)
Field_Pennycress
Field Pennycress (H. F. Schwartz, Colorado State University)
Field_Sandbur
Field Sandbur (H. F. Schwartz, Colorado State University)
Field_Sandbur
Field Sandbur (L. L. Berry, Colorado State University)
Filaree,_redstem;_Erodium_cicutarium
Filaree, redstem; adult; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)
Filaree,_redstem;_Erodium_cicutarium
Filaree, redstem; flower; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)
Filaree,_redstem;_Erodium_cicutarium
Filaree, redstem; flower; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)
Filaree,_redstem;_Erodium_cicutarium
Filaree, redstem; seedling and flower; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)
Fimbristylis_littoralis
Fimbristylis littoralis (FRW)
Fleabane,_hairy
' Hairy fleabane; Conyza ambigua DC.; Conyza bonariensis (L.)Cronq.; Eddubban; Erigeron bonariensis L.; Erigeron crispus Pourret; Fleabane, hairy; Nashash (FNE)
Fleabane_(Compositae,_Conyza_bonariensis_L._Cronq.)
Fleabane (Compositae, Conyza bonariensis (L.)Cronq.)(FAW) )
(Drawing)
Flordia_beggarweed_(Desmondium_tortuosum)
Flordia beggarweed (Desmondium tortuosum)
Flordia_beony_(Stachys_floridana)
Flordia beony (Stachys floridana)
Flordia_purslane_-_pusley_(Richardia_scabra)
Flordia purslane - pusley (Richardia scabra)
Flowering_cabbage_in_carrot
Flowering cabbage in carrot (H. F. Schwartz, Colorado State University)
Foxtail,_bristly
Bristly foxtail; Foxtail, bristly; Kamh el far; Setaria verticillata (L.)Beauv. (FNE)
Foxtail,_bristly;_Setaria_verticillata
Foxtail, bristly; adult; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_bristly;_Setaria_verticillata
Foxtail, bristly; flower; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_bristly;_Setaria_verticillata
Foxtail, bristly; flower; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_bristly;_Setaria_verticillata
Foxtail, bristly; ligule; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_green
Foxtail, green (H. F. Schwartz, Colorado State University)
Foxtail,_green
Foxtail, green (H. F. Schwartz, Colorado State University)
Foxtail,_green;_in_dry_beans
Foxtail, green; in dry beans (H. F. Schwartz, Colorado State University)
Foxtail,_green;_seeds
Foxtail, green; seeds (H. F. Schwartz, Colorado State University)
Foxtail,_green;_Setaria_viridis
Foxtail, green; adult; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_green;_Setaria_viridis
Foxtail, green; adult; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_green;_Setaria_viridis
Foxtail, green; flower; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_green;_Setaria_viridis
Foxtail, green; flower; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail,_yellow;_Setaria_glauca
Foxtail, yellow; flower; Setaria glauca (Irrigated Crops) (Steven Dewey, Utah State University)
Foxtail_&_other_grasses_in_dry_beans
Foxtail & other grasses in dry beans (H. F. Schwartz, Colorado State University)
Foxtail_(Setaria_sp.)_
Foxtail (Setaria sp.)
Foxtail_+_onion
Foxtail + onion (H. F. Schwartz, Colorado State University)
Foxtail_and_sandbur_complex_in_corn
Foxtail and sandbur complex in corn (P. Westra, Colorado State University)
Foxtail_Barley
Foxtail Barley (H. F. Schwartz, Colorado State University)
Foxtail_barley
Foxtail barley (H. F. Schwartz, Colorado State University)
Foxtail_infestation_in_corn
Foxtail infestation in corn (P. Westra, Colorado State University)
Foxtail_millet
Foxtail millet (M. A. Brick, Colorado State University)
Foxtail_millet
Foxtail millet (M. A. Brick, Colorado State University)
Foxtails
Foxtails (H. F. Schwartz, Colorado State University)
Fumitory,_common
Common fumitory; Fumaria officinalis L.; Fumitory, common (FNE)
Fumitory,_small_white
Fumitory, small white; Fumaria caespitosa Loscos.; Fumaria parviflora Lam.; Omeyyal; Small white fumitory (FNE)
Galerucella_spp.
Galerucella spp. (L. L. Berry, Colorado State University)
Giant_Mullen_and_seed_stalk
Giant Mullen and seed stalk (L. L. Berry, Colorado State University)
Giant_Mullen_rosette
Giant Mullen rosette (L. L. Berry, Colorado State University)
Giant_Mullen_seed_head_and_flowers
Giant Mullen seed head and flowers (L. L. Berry, Colorado State University)
Giant_Ragweed
Giant Ragweed (H. F. Schwartz, Colorado State University)
giant_ragweed_(Ambrosia_trifida)
giant ragweed (Ambrosia trifida)
Giant_ragweed_plant
Giant ragweed plant (H. F. Schwartz, Colorado State University)
Goat_weed_(Compositae,_Ageratum_conyzoides_L.)
Goat weed (Compositae, Ageratum conyzoides L.)(FAW) )
(Drawing)
Goatgrass,_jointed;_Aegilops_cylindrica
Goatgrass, jointed; adult; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)
Goatgrass,_jointed;_Aegilops_cylindrica
Goatgrass, jointed; flower; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)
Goatgrass,_jointed;_Aegilops_cylindrica
Goatgrass, jointed; ligule; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)
Goatgrass,_jointed;_Aegilops_cylindrica
Goatgrass, jointed; seedling; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)
Goatsrue,_Galega_officinalis
Goatsrue adult, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)
Goatsrue,_Galega_officinalis
Goatsrue flower, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)
Goatsrue,_Galega_officinalis
Goatsrue fruit, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)
Goatsrue,_Galega_officinalis
Goatsrue flower and leaf, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)
Golden_Banner,_Thermopsis_divaricarpa
Golden Banner, Thermopsis divaricarpa (L. L. Berry, Colorado State University)
Goldenod_(Solidago_sp.)_
Goldenod (Solidago sp.)
Goosefoot,_common
Common goosefoot; Chenopodium album L.; E'tra; Fat-hen; Fiss elkilab; Goosefoot, common (FNE)
Goosefoot,_nettle-leaved
Goosefoot, nettle-leaved; Chenopodium murale L.; Nettle-leaved goosefoot; Ramram (FNE)
Goosegrass
Goosegrass; Cleavers; Galium aparine L.(FNE)
Goosegrass/Cleavers_(Rubiaceae,_Galium_spurium_L._ssp._africanum_Verdc.)
Goosegrass/Cleavers (Rubiaceae, Galium spurium L. ssp. africanum Verdc.)(FAW) )
(Drawing)
goosegrass_(Eleusine_indica)
goosegrass (Eleusine indica)
Gramineae,_Digitaria_velutina_(Forssk.)_P._Beauv.
Gramineae, Digitaria velutina (Forssk.)P. Beauv. (FAW) )
(Drawing)
Gramineae,_Eragrostis_tenuifolia_(A._Rich.)_Steud.
Gramineae, Eragrostis tenuifolia (A. Rich.)Steud. (FAW) )
(Drawing)
Gramineae,_Setaria_pumila_Poir._Roem_&_Schult.
Gramineae, Setaria pumila (Poir.)Roem & Schult. (FAW) )
(Drawing)
Great_Plains_Yucca
Great Plains Yucca (H. F. Schwartz, Colorado State University)
Green_foxtail_in_corn
Green foxtail in corn (P. Westra, Colorado State University)
Green_foxtail_in_corn
Green foxtail in corn (P. Westra, Colorado State University)
Green_needlegrass,_basal_leaves
Green needlegrass, basal leaves (R. F. Jepson, Colorado State University)
Green_needlegrass_panicle
Green needlegrass panicle (Lair, Colorado State University)
Ground_cherry_in_dry_beans
Ground cherry in dry beans (H. F. Schwartz, Colorado State University)
Groundcherry,_smooth;_Physalis_subglabrata
Groundcherry, smooth; adult; Physalis subglabrata (Dryland Crops) (Steven Dewey, Utah State University)
Groundcherry,_smooth;_Physalis_subglabrata
Groundcherry, smooth; flower; Physalis subglabrata (Dryland Crops) (Steven Dewey, Utah State University)
Groundcherry,_smooth;_Physalis_subglabrata
Groundcherry, smooth; flower and leaf; Physalis subglabrata (Dryland Crops) (Steven Dewey, Utah State University)
Groundsel,_common;_Senecio_vulgaris
Groundsel, common; adult; Senecio vulgaris (Yard and Garden) (Steven Dewey, Utah State University)
Groundsel,_common;_Senecio_vulgaris
Groundsel, common; adult; Senecio vulgaris (Yard and Garden) (Steven Dewey, Utah State University)
Groundsel,_common;_Senecio_vulgaris
Groundsel, common; flower; Senecio vulgaris (Yard and Garden) (Steven Dewey, Utah State University)
Groundsel_(Senecio_sp.)
Groundsel (Senecio sp.)
Guinea_grass_(Gramineae,_Panicum_maximum_Jacq.)
Guinea grass (Gramineae, Panicum maximum Jacq.)(FAW) )
(Drawing)
Gumweed,_curlycup;_Grindelia_squarrosa
Gumweed, curlycup; adult; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Gumweed,_curlycup;_Grindelia_squarrosa
Gumweed, curlycup; flower; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Gumweed,_curlycup;_Grindelia_squarrosa
Gumweed, curlycup; leaf; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Gumweed,_curlycup;_Grindelia_squarrosa
Gumweed, curlycup; seedling; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Hairy_(left),_cutleaf_(center)_and_black_(right)_nightshades
Hairy (left), cutleaf (center)and black (right)nightshades (R. G. Wilson, Colorado State University)
Hairy_galinsoga_(Galinsoga_ciliata)
Hairy galinsoga (Galinsoga ciliata)
Hairy_nightshade_berries,_immature_with_star_pattern
Hairy nightshade berries, immature with star pattern (P. Westra, Colorado State University)
Hairy_nightshade_berries_which_do_not_darken
Hairy nightshade berries which do not darken (P. Westra, Colorado State University)
Hairy_nightshade_flower
Hairy nightshade flower (P. Westra, Colorado State University)
Hairy_nightshade_plant
Hairy nightshade plant (H. F. Schwartz, Colorado State University)
Hairy_nightshade_plant
Hairy nightshade plant (P. Westra, Colorado State University)
Hairy_nightshade_seedling
Hairy nightshade seedling (P. Westra, Colorado State University)
Hairy_nightshade_seedling
Hairy nightshade seedling (R. G. Wilson, Colorado State University)
Hairy_vetch_seeds
Hairy vetch seeds (H. F. Schwartz, Colorado State University)
Halogeton
Halogeton (L. L. Berry, Colorado State University)
Halogeton,_Halogeton_glomeratus
Halogeton adult, Halogeton glomeratus (Dryland Crops) (Steven Dewey, Utah State University)
Halogeton,_Halogeton_glomeratus
Halogeton leaf, Halogeton glomeratus (Dryland Crops) (Steven Dewey, Utah State University)
Halogeton_plant
Halogeton plant (L. L. Berry, Colorado State University)
Halogeton_seed_head
Halogeton seed head (L. L. Berry, Colorado State University)
Hartwort,_Egyptian
Egyptian hartwort; Hartwort, Egyptian; Tordylium aegyptiacum (L.)Lam. (FNE)
Heartleaf_drymary_(Drymaria_cordata)
heartleaf drymary (Drymaria cordata)
Helianthus_annus_sunflower
Helianthus annus sunflower (fully grown plant)
Hemlock,_poison;_Conium_maculatum
Hemlock, poison; adult; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_poison;_Conium_maculatum
Hemlock, poison; flower; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_poison;_Conium_maculatum
Hemlock, poison; seedling; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_poison;_Conium_maculatum
Hemlock, poison; rosette; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_water;_Cicuta_maculata
Hemlock, water; adult; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_water;_Cicuta_maculata
Hemlock, water; flower; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_water;_Cicuta_maculata
Hemlock, water; leaf; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemlock,_water;_Cicuta_maculata
Hemlock, water; roots; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)
Hemp_dogbane_(Apocynum_cannabinum)
Hemp dogbane (Apocynum cannabinum)
Hemp_sesbania_(Sesbania_exaltata)
Hemp sesbania (Sesbania exaltata)
Henbane,_black;_Hyoscyamus_niger
Henbane, black; adult; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Henbane,_black;_Hyoscyamus_niger
Henbane, black; flower; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Henbane,_black;_Hyoscyamus_niger
Henbane, black; fruit; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Henbane,_black;_Hyoscyamus_niger
Henbane, black; seedling; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Henbit,_great_1
Great henbit; Henbit, great; Kurray; Lamium amplexicaule L.; Larnium paczoskianum Vorosch.; Larnium rumelicum ssp orientale Pacz. ; Uj'ajeh (FNE)
Henbit,_great_2
Great henbit; Henbit, great; Kurray; Lamium amplexicaule L.; Larnium paczoskianum Vorosch.; Larnium rumelicum ssp orientale Pacz. ; Uj'ajeh (FNE)
Henbit,_Lamium_amplexicaule
Henbit flower, Lamium amplexicaule (Yard and Garden) (Steven Dewey, Utah State University)
Henbit,_Lamium_amplexicaule
Henbit seedling, Lamium amplexicaule (Yard and Garden) (Steven Dewey, Utah State University)
Henbit_(Lamium_amplexicaule)
Henbit (Lamium amplexicaule)
Highland_nutsedge_(Cyperaceae,_Cyperus_rigidifofius_Steud.)
Highland nutsedge (Cyperaceae, Cyperus rigidifofius Steud.)(FAW) )
(Drawing)
Hoary_Cress
Hoary Cress (L. L. Berry, Colorado State University)
Hoary_cress/White_top
Cardaria draba (L.)Desv.; Cress, hoary; Gnaibreh; Hoary cress; Lepidium draba L.; Lislis; Qana-barri; White top (FNE)
Hoary_Cress_flowers
Hoary Cress flowers (L. L. Berry, Colorado State University)
Hoary_Cress_infestation
Hoary Cress infestation (L. L. Berry, Colorado State University)
Hoary_Cress_leaves
Hoary Cress leaves (L. L. Berry, Colorado State University)
honeyvine_milkweed_(Ampelamus_albidus)
honeyvine milkweed (Ampelamus albidus)
horsenettle(Solanum_carolinensa)
horsenettle(Solanum carolinensa)
horseweed_(Erigeron_canadensis)
horseweed (Erigeron canadensis)
Houndstongue
Houndstongue (L. L. Berry, Colorado State University)
Houndstongue
Houndstongue (L. L. Berry, Colorado State University)
Houndstongue,_Cynoglossum_officinale
Houndstongue adult, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)
Houndstongue,_Cynoglossum_officinale
Houndstongue seeds, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)
Houndstongue,_Cynoglossum_officinale
Houndstongue flower, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)
Houndstongue,_Cynoglossum_officinale
Houndstongue seedling, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)
Houndstongue_rosette
Houndstongue rosette (L. L. Berry, Colorado State University)
Houndstongue_seed
Houndstongue seed (L. L. Berry, Colorado State University)
Houndstongue_seed_heads
Houndstongue seed heads (L. L. Berry, Colorado State University)
Imperata_cylindrica
Imperata cylindrica (FAO_MTG)
Inland_saltgrass
Inland saltgrass (R. F. Jepson, Colorado State University)
Ipomoea_hederacea__ivyleaf_morningglory
Ipomoea hederacea ivyleaf morningglory (seedling)
Ipomoea_sp._Morningglory
Ipomoea sp. Morningglory (infested field)
Itch_grass_(Gramineae,_Rottboellia_cochinchinensis_Lour._W.D._Clayton)
Itch_grass_(Gramineae, Rottboellia cochinchinensis (Lour.)W.D. Clayton)(FAW) )
(Drawing)
Japanese_brome_panicle
Japanese brome panicle (Lair, Colorado State University)
Japanese_honeysuckle_(Lonicera_japonica)
Japanese honeysuckle (Lonicera japonica)
Jimpson_weed_plant_in_dry_bean_field
Jimpson weed plant in dry bean field (P. Westra, Colorado State University)
Jimpson_weed_seed_pod_and_spines
Jimpson weed seed pod and spines (P. Westra, Colorado State University)
Jimpson_weed_seedling_and_cotyledons
Jimpson weed seedling and cotyledons (P. Westra, Colorado State University)
Jimsonweed
Jimsonweed (H. F. Schwartz, Colorado State University)
Jimsonweed_(Datura_stramonium)
Jimsonweed (Datura stramonium)
Jimsonweed_plant
Jimsonweed plant (G. Y. Frissoe, Colorado State University)
Jimsonweed_seed_capsule
Jimsonweed seed capsule (G. Y. Frissoe, Colorado State University)
Jimpson_weed_flower
Jimpson weed flower (P. Westra, Colorado State University)
Johnson_grass
Johnson grass; Aleppo grass; Hashishet el faras; Kusaibeh; Sorghum halepense (L.)Pers. (FNE)
Johnson_grass_in_dry_beans
Johnson grass in dry beans (H. F. Schwartz, Colorado State University)
Johnsongrass
Johnsongrass (H. F. Schwartz, Colorado State University)
Johnsongrass
Johnsongrass (Lair, Colorado State University)
Johnsongrass
Johnsongrass (H. F. Schwartz, Colorado State University)
Johnsongrass_(Sorghum_halepense)
Johnsongrass adult (Sorghum halepense)(Irrigated Crops) (Steven Dewey, Utah State University)
Johnsongrass_(Sorghum_halepense)
Johnsongrass (Sorghum halepense)
Johnsongrass_*_Sorghum_halepense
Johnsongrass flower * Sorghum halepense (Irrigated Crops) (Steven Dewey, Utah State University)
Johnsongrass_*_Sorghum_halepense
Johnsongrass ligule * Sorghum halepense (Irrigated Crops) (Steven Dewey, Utah State University)
Johnsongrass_*_Sorghum_halepense
Johnsongrass roots * Sorghum halepense (Irrigated Crops) (Steven Dewey, Utah State University)
Johnsongrass_in_beans
Johnsongrass in beans (H. F. Schwartz, Colorado State University)
Johnsongrass_in_onions
Johnsongrass in onions (H. F. Schwartz, Colorado State University)
Johnsongrass_in_onions
Johnsongrass in onions (H. F. Schwartz, Colorado State University)
Johnsongrass_in_pole_bean_field
Johnsongrass in pole bean field (H. F. Schwartz, Colorado State University)
Johnsongrass_seeds
Johnsongrass seeds (H. F. Schwartz, Colorado State University)
Jointed_Goatgrass
Jointed Goatgrass (H. F. Schwartz, Colorado State University)
Jointed_goatgrass_cylinders
Jointed goatgrass cylinders (P. Westra, Colorado State University)
Jointed_goatgrass_diagram
Jointed goatgrass diagram (S. J. Nissen, Colorado State University)
Jointed_goatgrass_in_wheat
Jointed goatgrass in wheat (P. Westra, Colorado State University)
Jointed_goatgrass_infested_with_Russian_wheat_aphid
Jointed goatgrass infested with Russian wheat aphid (P. Westra, Colorado State University)
Jointed_goatgrass_patch_in_wheat
Jointed goatgrass patch in wheat (P. Westra, Colorado State University)
Jointed_goatgrass_seedling_in_field
Jointed goatgrass seedling in field (P. Westra, Colorado State University)
Jointed_goatgrass_seeds
Jointed goatgrass seeds (H. F. Schwartz, Colorado State University)
Kentucky_bluegrass_panicle
Kentucky bluegrass panicle (Lair, Colorado State University)
Kikuyu_grass_(Gramineae,_Pennisetum_clandestinum_Chiov.)
Kikuyu grass (Gramineae, Pennisetum clandestinum Chiov.)(FAW) )
(Drawing)
Knapweed,_diffuse;_Centaurea_diffusa
Knapweed, diffuse; adult; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_diffuse;_Centaurea_diffusa
Knapweed, diffuse; bracts; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_diffuse;_Centaurea_diffusa
Knapweed, diffuse; flower; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_diffuse;_Centaurea_diffusa
Knapweed, diffuse; flower; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_Russian;_Centaurea_repens
Knapweed, Russian; adult; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_Russian;_Centaurea_repens
Knapweed, Russian; bracts; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_Russian;_Centaurea_repens
Knapweed, Russian; flower; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_Russian;_Centaurea_repens
Knapweed, Russian; seedling; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_spotted;_Centaurea_maculosa
Knapweed, spotted; adult; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_spotted;_Centaurea_maculosa
Knapweed, spotted; flower; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_spotted;_Centaurea_maculosa
Knapweed, spotted; bracts; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_spotted;_Centaurea_maculosa
Knapweed, spotted; seedling; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
Knapweed, squarrose; adult; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
Knapweed, squarrose; flower; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
Knapweed, squarrose; flower; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa
Knapweed, squarrose; seedling; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)
Knapweed_biocontrol_agents_
Knapweed biocontrol agents (L. L. Berry, Colorado State University)
Knotgrass
Knotgrass; Polygonum aviculare L.; Polygonum heterophyllum Lindman; Polygonum littorale; Qoddab (FNE)
Knotgrass_(Polygonaceae,_Polygonum_aviculare_L.)
Knotgrass, Polygonaceae, Polygonum aviculare L. (FAW) )
(Drawing)
Knotweed,_prostrate;_Polygonum_aviculare
Knotweed, prostrate; adult; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)
Knotweed,_prostrate;_Polygonum_aviculare
Knotweed, prostrate; flower; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)
Knotweed,_prostrate;_Polygonum_aviculare
Knotweed, prostrate; seedling; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)
Knotweed,_prostrate;_Polygonum_aviculare
Knotweed, prostrate; leaf; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)
knotweed_(Polygonum_sp.)_
knotweed (Polygonum sp.)
Kochia
Kochia (H. F. Schwartz, Colorado State University)
Kochia
Kochia (H. F. Schwartz, Colorado State University)
Kochia,_dense_stand_beneath_mother_plant
Kochia, dense stand beneath mother plant (P. Westra, Colorado State University)
Kochia,_dense_stand_in_spring
Kochia, dense stand in spring (P. Westra, Colorado State University)
Kochia,_early_stage_in_spring
Kochia, early stage in spring (P. Westra, Colorado State University)
Kochia,_green_stem
Kochia, green stem (P. Westra, Colorado State University)
Kochia,_Kochia_scoparia
Kochia adult, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)
Kochia,_Kochia_scoparia
Kochia adult, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)
Kochia,_Kochia_scoparia
Kochia field, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)
Kochia,_Kochia_scoparia
Kochia seedling, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)
Kochia,_mature_triazine_resistant_plant
Kochia, mature triazine resistant plant (P. Westra, Colorado State University)
Kochia,_multiple_side_shoots
Kochia, multiple side shoots (P. Westra, Colorado State University)
Kochia,_puffball_stage_in_early_spring
Kochia, puffball stage in early spring (P. Westra, Colorado State University)
Kochia,_red_flowers
Kochia, red flowers (P. Westra, Colorado State University)
Kochia,_red_stem
Kochia, red stem (P. Westra, Colorado State University)
Kochia,_triazine_resistant_in_corn_field
Kochia, triazine resistant in corn field (P. Westra, Colorado State University)
Kochia,_yellow_flower_closeup
Kochia, yellow flower closeup (P. Westra, Colorado State University)
Kochia_+_onion
Kochia + onion (H. F. Schwartz, Colorado State University)
Kochia_branch_in_full_flower
Kochia branch in full flower (P. Westra, Colorado State University)
Kochia_leaf_shape_and_size_variation
Kochia leaf shape and size variation (P. Westra, Colorado State University)
Kochia_pollen_feeding_by_blister_beetle
Kochia pollen feeding by blister beetle (P. Westra, Colorado State University)
Kochia_pollen_grain_under_SEM
Kochia pollen grain under SEM (P. Westra, Colorado State University)
Kochia_seeds
Kochia seeds (H. F. Schwartz, Colorado State University)
kudzu_(Pueraria_lobata)
kudzu (Pueraria lobata)
Ladysthumb,_Polygonum_persicaria
Ladysthumb adult, Polygonum persicaria (Irrigated Crops) (Steven Dewey, Utah State University)
Ladysthumb,_Polygonum_persicaria
Ladysthumb flower, Polygonum persicaria (Irrigated Crops) (Steven Dewey, Utah State University)
Lambsquarter_in_dry_beans
Lambsquarter in dry beans (H. F. Schwartz, Colorado State University)
Lambsquarter_in_onion
Lambsquarter in onion (H. F. Schwartz, Colorado State University)
Lambsquarter_seedling
Lambsquarter seedling (R. G. Wilson, Colorado State University)
Lambsquarters,_Chenopodium_album
Lambsquarters adult, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)
Lambsquarters,_Chenopodium_album
Lambsquarters adult, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)
Lambsquarters,_Chenopodium_album
Lambsquarters seedling, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)
Lambsquarters,_Chenopodium_album
Lambsquarters seedling, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)
Lambsquarters_+_onion
Lambsquarters + onion (H. F. Schwartz, Colorado State University)
Lambsquarters_+_spinach_red_rust
Lambsquarters + spinach red rust (H. F. Schwartz, Colorado State University)
Lambsquarters_+_spinach_red_rust
Lambsquarters + spinach red rust (H. F. Schwartz, Colorado State University)
Lambsquarters_+_spinach_red_rust
Lambsquarters + spinach red rust (H. F. Schwartz, Colorado State University)
Lambsquarters_seeds
Lambsquarters seeds (H. F. Schwartz, Colorado State University)
Lanceleaf_Sage
Lanceleaf Sage (H. F. Schwartz, Colorado State University)
Lanceleaf_sage
Lanceleaf sage (P. Westra, Colorado State University)
Lanceleaf_sage_plants_in_dry_bean_field
Lanceleaf sage plants in dry bean field (P. Westra, Colorado State University)
Lantana_camara,_pink-flowered_form
Lantana camara, pink-flowered form (FAO_MTG)
Large_barnyardgrass_plant_seed_heads
Large barnyardgrass plant seed heads (P. Westra, Colorado State University)
Large_crabgrass_(Digitaria_sanguinalis)
Large crabgrass (Digitaria sanguinalis)
Large_sandbur_plant
Large sandbur plant (P. Westra, Colorado State University)
Larkspur,_Delphinium_geyerii
Larkspur, Delphinium geyerii (L. L. Berry, Colorado State University)
Late_weed_(Boraginaceae,_Trichodesma_zeylanicum_L._R._Br.)
Late weed (Boraginaceae, Trichodesma zeylanicum (L.)R. Br.)(FAW) )
(Drawing)
Leaf_Spurge_heart-shaped_bracts
Leaf Spurge heart-shaped bracts (L. L. Berry, Colorado State University)
Leafy_Spurge
Leafy Spurge (H. F. Schwartz, Colorado State University)
Leafy_Spurge,_Canada_Thistle_and_Russian_Knapweed_perennial_roots
Leafy Spurge, Canada Thistle and Russian Knapweed perennial roots (L. L. Berry, Colorado State University)
Leafy_Spurge,_flowering
Leafy Spurge, flowering (K. G. Beck, Colorado State University)
Leafy_Spurge,_late_flowering
Leafy Spurge, late flowering (K. G. Beck, Colorado State University)
Leafy_Spurge,_leaf_shape_+_latex
Leafy Spurge, leaf shape + latex (K. G. Beck, Colorado State University)
Leafy_Spurge,_sheep_grazing_for_control
Leafy Spurge, sheep grazing for control (K. G. Beck, Colorado State University)
Leafy_Spurge,_vegetative_reproduction
Leafy Spurge, vegetative reproduction (K. G. Beck, Colorado State University)
Leafy_Spurge,_whole_plant_flowering
Leafy Spurge, whole plant flowering (K. G. Beck, Colorado State University)
Leafy_Spurge_at_Meeker,_grazed_left,_ungrazed_right
Leafy Spurge at Meeker, grazed left, ungrazed right (K. G. Beck, Colorado State University)
Leafy_Spurge_field
Leafy Spurge field (L. L. Berry, Colorado State University)
Leafy_Spurge_root_crown_and_root_buds
Leafy Spurge root crown and root buds (L. L. Berry, Colorado State University)
Leafy_Spurge_seed
Leafy Spurge seed (L. L. Berry, Colorado State University)
Leafy_spurge_seeds
Leafy spurge seeds (H. F. Schwartz, Colorado State University)
Leafy_Spurge_with_yello-green_bracts
Leafy Spurge with yello-green bracts (L. L. Berry, Colorado State University)
Leptochloa_chinensis
Leptochloa chinensis (FRW)
Liquorice,_common
Common liquorice; Glycyrrhiza glabra L.; Glycyrrhiza glandulifera Waldst. & Kit.; I'rk soos; Liquorice, common; Soos (FNE)
little_barley_(Hordeum_pusillum)
little barley (Hordeum pusillum)
Little_bluestem
Little bluestem (Lair, Colorado State University)
London_rocket
London rocket; Hwairreh; Kibseh; Saleeh; Sisymbrium irio L. (FNE)
Love_grass_(Gramineae,_Setaria_verticillata_L._P._Beauv.)
Love grass (Gramineae, Setaria verticillata (L.)P. Beauv.)(FAW) )
(Drawing)
Low_larkspur,_Delphinium_spp.
Low larkspur flower, Delphinium spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)
Low_larkspur,_Delphinium_spp.
Low larkspur flower and leaf, Delphinium spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)
Ludwigia_octovalvis
Ludwigia octovalvis (FRW)
Ludwigia_prostrata
Ludwigia prostrata (FRW)
Lupine,_Lupinus_spp.
Lupine adult, Lupinus spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)
Lupine,_Lupinus_spp.
Lupine flower, Lupinus spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)
Lupine,_Lupinus_spp.
Lupine flower, Lupinus spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)
Macdonaldi_(Compositae,_Galinsoga_parviflora_Cav.)
Macdonaldi (Compositae, Galinsoga parviflora Cav. (FAW) )
(Drawing)
Mallow,_bull
Bull mallow; Mallow, bull; Malva montana Forsk.; Malva nicaeensis All. (FNE)
Mallow_(Malvaceae,_Malva_verticillata_L.)
Mallow_(Malvaceae, Malva verticillata L.)(FAW) )
(Drawing)
Malvaceae,_Sida_acuta_Burm._f.
Malvaceae, Sida acuta Burm. f. (FAW) )
(Drawing)
Marshelder,_Iva_xanthifolia
Marshelder adult, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Marshelder,_Iva_xanthifolia
Marshelder flower, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Marshelder,_Iva_xanthifolia
Marshelder flower and leaf, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Marshelder,_Iva_xanthifolia
Marshelder leaf, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
maypop_passionflower_(Passiflora_incarnata)
maypop passionflower (Passiflora incarnata)
mayweed_(Anthemis_cotula)
mayweed (Anthemis cotula)
Mayweed_(False_Chamomile),_Authemis_cotula
Mayweed (False Chamomile), Authemis cotula (L. L. Berry, Colorado State University)
Mediterranean_Sage
Mediterranean Sage (L. L. Berry, Colorado State University)
Mediterranean_Sage
Mediterranean Sage (L. L. Berry, Colorado State University)
Mediterranean_Sage,_Salvia_aethiopis
Mediterranean Sage, Salvia aethiopis (L. L. Berry, Colorado State University)
Mediterranean_Sage_(Gray_Areas)
Mediterranean Sage (Gray Areas) (L. L. Berry, Colorado State University)
Medusahead,_Taeniatherum_caput-medusae
Medusahead adult, Taeniatherum caput-medusae (Pasture/Rangeland) (Steven Dewey, Utah State University)
Medusahead,_Taeniatherum_caput-medusae
Medusahead flower, Taeniatherum caput-medusae (Pasture/Rangeland) (Steven Dewey, Utah State University)
Medusahead,_Taeniatherum_caput-medusae
Medusahead seeds, Taeniatherum caput-medusae (Pasture/Rangeland) (Steven Dewey, Utah State University)
Melilot,_indian
Indian melilot; Handaqooq; Melilot, indian; Melilotus indica (L.)AI1. (FNE)
Mercury,_annual
Annual mercury; Mercurialis annua L.; Mercury, annual (FNE)
Mesquite/Yanbut
Mesquite; Prosopis farcta (Banks & Sol.)Macbride ; Shilshilawe; Yanbut (FNE)
Mexican_poppy_(Papaveraceae,_Argemone_mexicana_L.)
Mexican poppy (Papaveraceae, Argemone mexicana L.)(FAW) )
(Drawing)
Milk_vetch_seeds
Milk vetch seeds (H. F. Schwartz, Colorado State University)
Milkweed_in_dry_beans
Milkweed in dry beans (H. F. Schwartz, Colorado State University)
Mimosa_pigra
Mimosa pigra (FAO_MTG)
Mistletoe,_oriental
Mistletoe, oriental; Dabak; E'nebbeh; Oriental mistletoe; Viscum cruciatum Sieb. (FNE)
Monochoria_vaginalis
Monochoria vaginalis (FRW)
Monochoria_vaginalis
Monochoria vaginalis (FRW)
Morningglory_in_beans
Morningglory in beans (H. F. Schwartz, Colorado State University)
Morningglory_in_onions
Morningglory in onions (H. F. Schwartz, Colorado State University)
Morningglory_in_onions
Morningglory in onions (H. F. Schwartz, Colorado State University)
Morningglory
Morningglory (H. F. Schwartz, Colorado State University)
Morningglory
Morningglory (H. F. Schwartz, Colorado State University)
Morningglory
Morningglory (H. F. Schwartz, Colorado State University)
Mouseear_chickweed_(Cerastium_vulgatum)
Mouseear chickweed (Cerastium vulgatum)
Musk_Thistle
Musk Thistle (H. F. Schwartz, Colorado State University)
Musk_Thistle,_collection_of_T._horridus_in_infested_weeds
Musk Thistle, collection of T. horridus in infested weeds (L. L. Berry, Colorado State University)
Musk_Thistle,_infestation_near_Collbran
Musk Thistle, infestation near Collbran (L. L. Berry, Colorado State University)
Musk_Thistle,_infestation_near_Collbran_3_years_later
Musk Thistle, infestation near Collbran 3 years later (L. L. Berry, Colorado State University)
Musk_Thistle_1st-year_rosette
Musk Thistle 1st-year rosette (K. G. Beck, Colorado State University)
Musk_Thistle_2nd-year_rosette
Musk Thistle 2nd-year rosette (K. G. Beck, Colorado State University)
Musk_Thistle_2nd-year_rosette
Musk Thistle 2nd-year rosette (L. L. Berry, Colorado State University)
Musk_Thistle_flowering_stages
Musk Thistle flowering stages (K. G. Beck, Colorado State University)
Musk_thistle_infestation
Musk thistle infestation (H. F. Schwartz, Colorado State University)
Musk_Thistle_infestation
Musk Thistle infestation (L. L. Berry, Colorado State University)
Musk_Thistle_plant
Musk Thistle plant (L. L. Berry, Colorado State University)
Musk_Thistle_stem_and_bud,_spines_on_leaves_and_stem
Musk Thistle stem and bud, spines on leaves and stem (L. L. Berry, Colorado State University)
Mustard
Mustard (H. F. Schwartz, Colorado State University)
Mustard
Mustard (L. L. Berry, Colorado State University)
Mustard
Mustard (L. L. Berry, Colorado State University)
Mustard
Mustard (L. L. Berry, Colorado State University)
Mustard,_black;_Brassica_nigra
Mustard, black; adult; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_black;_Brassica_nigra
Mustard, black; fruit; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_black;_Brassica_nigra
Mustard, black; flower; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_black;_Brassica_nigra
Mustard, black; leaf; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_blue;_Chorispora_tenella
Mustard, blue; adult; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_blue;_Chorispora_tenella
Mustard, blue; flower; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_blue;_Chorispora_tenella
Mustard, blue; fruit; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_blue;_Chorispora_tenella
Mustard, blue; stem; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_hoary
Hoary mustard; Fossat; Hirschfeldia incana (L)Lagreze- Fossat; Mustard, hoary; Sinapis incana L. (FNE)
Mustard,_pink
Pink mustard; Erucaria aleppica Gaertner,; Erucaria hispanica (L.)Druce; Erucaria myagroides (L.)Halacsy,; Erucaria tenuifolia DC.; Mustard, pink(FNE)
Mustard,_tansy
mustard, tansy; flower (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tansy
Mustard, tansy; fruit (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tansy
Mustard, tansy; seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tansy
Mustard, tansy; adult (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tumble;_Sisymbrium_altissimum
Mustard, tumble; adult; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tumble;_Sisymbrium_altissimum
Mustard, tumble; adult; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tumble;_Sisymbrium_altissimum
Mustard, tumble; seedling; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_tumble;_Sisymbrium_altissimum
Mustard, tumble; seedling; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_white
Mustard, white; Sinapis alba L.; Sinapis dissecta Lag.; White mustard (FNE)
Mustard,_wild/Charlock
Mustard, wild; Brassica kaber (DC)L.C.Wheeler.; Charlock; Sinapis arvensis L.; Sinapis orientalis L.; Sinapis schkuhriana Reichenb. (FNE)
Mustard,_wild;_Brassica_kaber
Mustard, wild (Brassica kaber); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_wild;_Brassica_kaber
Mustard, wild (Brassica kaber); fruit (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_wild;_Brassica_kaber
Mustard, wild (Brassica kaber); flower and seeds (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard,_wild;_Brassica_kaber
Mustard, wild (Brassica kaber); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Mustard_in_onion
Mustard in onion (H. F. Schwartz, Colorado State University)
Narrowleaf_vetch_(Vicia_angustifolia)
Narrowleaf vetch (Vicia angustifolia)
Nettle,_small
Nettle, small; Small nettle; Urtica urens L. (FNE)
Nightshade
Nightshade (H. F. Schwartz, Colorado State University)
Nightshade
Nightshade (H. F. Schwartz, Colorado State University)
Nightshade
Nightshade (H. F. Schwartz, Colorado State University)
Nightshade,_bittersweet;_Solanum_dulcamara
Nightshade, bittersweet (Solanum dulcamara); adult (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_bittersweet;_Solanum_dulcamara
Nightshade, bittersweet (Solanum dulcamara); flower and fruits (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_bittersweet_(Solanum_dulcamara)
Nightshade, bittersweet (Solanum dulcamara); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_cutleaf_(Solanum_triflorum)
Nightshade, cutleaf (Solanum triflorum); adult (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_cutleaf_(Solanum_triflorum)
Nightshade, cutleaf (Solanum triflorum); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_cutleaf_(Solanum_triflorum)
Nightshade, cutleaf (Solanum triflorum); seedling (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_hairy_(Solanum_sarrachoides)
Nightshade, hairy (Solanum sarrachoides); adult (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_hairy_(Solanum_sarrachoides)
Nightshade, hairy (Solanum sarrachoides); flower (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_hairy_(Solanum_sarrachoides)
Nightshade, hairy (Solanum sarrachoides); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade,_hairy_(Solanum_sarrachoides)
Nightshade, hairy (Solanum sarrachoides); seedling (Yard and Garden) (Steven Dewey, Utah State University)
Nightshade_+_onion
Nightshade + onion (H. F. Schwartz, Colorado State University)
Nightshade_in_dry_beans
Nightshade in dry beans (H. F. Schwartz, Colorado State University)
Nightshade_in_dry_beans
Nightshade in dry beans (H. F. Schwartz, Colorado State University)
Nightshade_in_dry_beans
Nightshade in dry beans (H. F. Schwartz, Colorado State University)
Nightshade_leaf_+_Colorado_potato_beetle_eggs
Nightshade leaf + Colorado potato beetle eggs (P. Westra, Colorado State University)
Nightshade_seedling_and_first_true_leaves
Nightshade seedling and first true leaves (P. Westra, Colorado State University)
Nutsedge
Nutsedge (H. F. Schwartz, Colorado State University)
Nutsedge,_purple
Purple nutsedge; Cyperus esculentus L.; Nutgrass; Nutsedge, purple; Sa'd; Su'aideh (FNE)
Nutsedge,_yellow
Yellow nutsedge; Cyperus rotundus L. ; Nutsedge, yellow (FNE)
Nutsedge,_yellow_(Cyperus_esculentus)
Nutsedge, yellow (Cyperus esculentus); adult (Yard and Garden) (Steven Dewey, Utah State University)
Nutsedge,_yellow_(Cyperus_esculentus)
Nutsedge, yellow (Cyperus esculentus); flower (Yard and Garden) (Steven Dewey, Utah State University)
Nutsedge,_yellow_(Cyperus_esculentus)
Nutsedge, yellow (Cyperus esculentus); roots (Yard and Garden) (Steven Dewey, Utah State University)
Nutsedge,_yellow_(Cyperus_esculentus)
Nutsedge, yellow (Cyperus esculentus); stem (Yard and Garden) (Steven Dewey, Utah State University)
Nutsedge_in_beans
Nutsedge in beans (H. F. Schwartz, Colorado State University)
Nutsedge_in_onion
Nutsedge in onion (H. F. Schwartz, Colorado State University)
Nutsedge_in_onion
Nutsedge in onion (H. F. Schwartz, Colorado State University)
Nutsedge_plant
Nutsedge plant (G. Y. Frissoe, Colorado State University)
Oats,_wild_(Avena_fatua)
Oats, wild (Avena fatua); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Oats,_wild_(Avena_fatua)
- Oats, wild (Avena fatua); flower (Irrigated Crops)
(Steven Dewey, Utah State University)
Oats,_wild_(Avena_fatua)
Oats, wild (Avena fatua); seed (Irrigated Crops) (Steven Dewey, Utah State University)
Oats,_wild_(Avena_fatua)
Oats, wild (Avena fatua); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Olive,_Russian_(Elaegnus_angustifolia)
Olive, Russian (Elaegnus angustifolia); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Olive,_Russian_(Elaegnus_angustifolia)
Olive, Russian (Elaegnus angustifolia); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Olive,_Russian_(Elaegnus_angustifolia)
Olive, Russian (Elaegnus angustifolia); seeds (Wildland/Recreation) (Steven Dewey, Utah State University)
Olive,_Russian_(Elaegnus_angustifolia)
Olive, Russian (Elaegnus angustifolia); leaf and fruit (Wildland/Recreation) (Steven Dewey, Utah State University)
Onion,_wild_(Allium_spp.)
Onion, wild (Allium spp.); adult (Dryland Crops) (Steven Dewey, Utah State University)
Onion,_wild_(Allium_spp.)
Onion, wild (Allium spp.); flower (Dryland Crops) (Steven Dewey, Utah State University)
Oprickly_pear_(puntia_sp.)
Oprickly pear (puntia sp.)
Orache_(Atriplex_patula)
Orache (Atriplex patula); adult (Yard and Garden) (Steven Dewey, Utah State University)
Orache_(Atriplex_patula)
Orache (Atriplex patula); leaf and flower (Yard and Garden) (Steven Dewey, Utah State University)
Orchardgrass_(Dactylis_glomerata)
Orchardgrass (Dactylis glomerata); adult (Turf) (Steven Dewey, Utah State University)
Orchardgrass_(Dactylis_glomerata)
Orchardgrass (Dactylis glomerata); flower (Turf) (Steven Dewey, Utah State University)
Orchardgrass_(Dactylis_glomerata)
Orchardgrass (Dactylis glomerata); leaf (Turf) (Steven Dewey, Utah State University)
Orchardgrass_(Dactylis_glomerata)
Orchardgrass (Dactylis glomerata); field (Turf) (Steven Dewey, Utah State University)
Orchardgrass_panicle
Orchardgrass panicle (Lair, Colorado State University)
Oriental_Virgin's_Bower,_Clematis_orientalis
Oriental Virgin's Bower, Clematis orientalis (L. L. Berry, Colorado State University)
Orobanche_aegyptiaca
Orobanche aegyptiaca (FAO_MTG)
Orobanche_cernua
Orobanche cernua (FAO_MTG)
Orobanche_crenata
Orobanche crenata (FAO_MTG)
Orobanche_ramosa
Orobanche ramosa (FAO_MTG)
Oxalis_(Oxalidaceae,_Oxalis_latifolia_H.B.K.)
Oxalis_(Oxalidaceae, Oxalis latifolia H.B.K.)(FAW) )
(Drawing)
Palestine_chamomile
Palestine chamomile; Anthem is palaestina Reut.; Chamomile, Palestine; (FNE)
Parthenium_hysterophorus_flowering
Parthenium hysterophorus flowering (FAO_MTG)
Parthenium_hysterophorus_seedling
Parthenium hysterophorus seedling (FAO_MTG)
Partridge_pea_(Cassia_fasciculata)
Partridge pea (Cassia fasciculata)
Pennisetum_clandestinum,_flowering_and_vegetative_shoots
Pennisetum clandestinum, flowering and vegetative shoots (FAO_MTG)
Pennsylvania_smartweed_(Polygonum_pennsylvanicum)
Pennsylvania smartweed (Polygonum pennsylvanicum)
Pennycress,_field_(Thlaspi_arvense)
Pennycress, field (Thlaspi arvense); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Pennycress,_field_(Thlaspi_arvense)
Pennycress, field (Thlaspi arvense); fruit (Irrigated Crops) (Steven Dewey, Utah State University)
Pennycress,_field_(Thlaspi_arvense)
Pennycress, field (Thlaspi arvense); flower (Irrigated Crops) (Steven Dewey, Utah State University)
Pennycress,_field_(Thlaspi_arvense)
Pennycress, field (Thlaspi arvense); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Pennycress_in_winter_wheat
Pennycress in winter wheat (H. F. Schwartz, Colorado State University)
Pennycress_in_winter_wheat
Pennycress in winter wheat (H. F. Schwartz, Colorado State University)
Peppervine_(Ampelopsis_arborea)
peppervine (Ampelopsis arborea)
Pepperweed,_clasping_(Lepidium_perfoliatum)
Pepperweed, clasping (Lepidium perfoliatum); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Pepperweed,_clasping_(Lepidium_perfoliatum)
Pepperweed, clasping (Lepidium perfoliatum); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Pepperweed,_clasping_(Lepidium_perfoliatum)
Pepperweed, clasping (Lepidium perfoliatum); flower (Irrigated Crops) (Steven Dewey, Utah State University)
Pepperweed,_clasping_(Lepidium_perfoliatum)
Pepperweed, clasping (Lepidium perfoliatum); leaf (Irrigated Crops) (Steven Dewey, Utah State University)
Pepperweed,_perennial_*_(Lepidium_latifolium)
Pepperweed, perennial * (Lepidium latifolium); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Pepperweed,_perennial_*_(Lepidium_latifolium)
Pepperweed, perennial * (Lepidium latifolium); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Pepperweed,_perennial_*_(Lepidium_latifolium)
Pepperweed, perennial * (Lepidium latifolium); roots (Wildland/Recreation) (Steven Dewey, Utah State University)
Pepperweed,_perennial_*_(Lepidium_latifolium)
Pepperweed, perennial * (Lepidium latifolium); seedling (Wildland/Recreation) (Steven Dewey, Utah State University)
Perennial_Pepperweed
Perennial Pepperweed (L. L. Berry, Colorado State University)
Perennial_Pepperweed_seedlings
Perennial Pepperweed seedlings (L. L. Berry, Colorado State University)
Perennial_Sweetpea,_Lathryrus_latifolius
Perennial Sweetpea, Lathryrus latifolius (L. L. Berry, Colorado State University)
Perrenial_Pepperweed_infestation_in_pasture
Perrenial Pepperweed infestation in pasture (L. L. Berry, Colorado State University)
Pigeongrass_diagram
Pigeongrass diagram (S. J. Nissen, Colorado State University)
Pigeongrass_diagram
Pigeongrass diagram (S. J. Nissen, Colorado State University)
Pigeongrass_diagram
Pigeongrass diagram (S. J. Nissen, Colorado State University)
Pigeongrass_diagram
Pigeongrass diagram (S. J. Nissen, Colorado State University)
Pigeongrass_diagram
Pigeongrass diagram (S. J. Nissen, Colorado State University)
Pigweed,_prostrate
Prostrate pigweed; Amaranthus blitoides S.Watson; (FNE)
Pigweed,_prostrate_(Amaranthus_blitoides)
Pigweed, prostrate (Amaranthus blitoides); adult (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_prostrate_(Amaranthus_blitoides)
Pigweed, prostrate (Amaranthus blitoides); adult (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_prostrate_(Amaranthus_blitoides)
Pigweed, prostrate (Amaranthus blitoides); leaf (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_prostrate_(Amaranthus_blitoides)
Pigweed, prostrate (Amaranthus blitoides); leaf (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_redroot_(Amaranthus_retroflexus)
Pigweed, redroot (Amaranthus retroflexus); adult (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_redroot_(Amaranthus_retroflexus)
Pigweed, redroot (Amaranthus retroflexus); flower (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_redroot_(Amaranthus_retroflexus)
Pigweed, redroot (Amaranthus retroflexus); leaf, flower, roots (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_redroot_(Amaranthus_retroflexus)
Pigweed, redroot (Amaranthus retroflexus); seedling (Yard and Garden) (Steven Dewey, Utah State University)
Pigweed,_white
White pigweed; Amaranthus angustifolius Lam.; Amaranthus graecizans L.; Amaranthus sylvestris Vill.; (FNE)
Pigweed_+_onion
Pigweed + onion (H. F. Schwartz, Colorado State University)
Pigweed_in_onions
Pigweed in onions (H. F. Schwartz, Colorado State University)
Pigweed_plant,_in_dry_beans
Pigweed plant, in dry beans (H. F. Schwartz, Colorado State University)
Pimpernel,_blue
Blue pimpernel; Anagallis arvensis ssp caerulea Hartman; Anagallis arvensis ssp foemina (Miller)Schinz. & Thell. ; Anagallis foemina Miller; Pimpernel, blue (FNE)
Pimpernel,_scarlet
Scarlet pimpernel; Anagallis arvensis L.; Anagallis parviflora Hoffmanns. & Link; Anagallis phoenicea Scop.; Anagallis platyphylla Baudo; Pimpernel, scarlet (FNE)
Pink_vetch
Pink vetch (H. F. Schwartz, Colorado State University)
Plantain,_broadleaf_(Plantago_major)
Plantain, broadleaf (Plantago major); adult (Turf) (Steven Dewey, Utah State University)
Plantain,_buckhorn_(Plantago_lanceolata)
Plantain, buckhorn (Plantago lanceolata); adult (Turf) (Steven Dewey, Utah State University)
Plantain,_buckhorn_(Plantago_lanceolata)
Plantain, buckhorn (Plantago lanceolata); flower (Turf) (Steven Dewey, Utah State University)
Plantain,_narrow-leaved/_Ribgrass
Ribgrass; Plantago lanceolata L.; Plantain, narrow-leaved; Widnah (FNE)
Poison_ivy_(Rhus_radioans)
Poison ivy (Rhus radioans)
Pokeberry_(Phytolacca_americana)
Pokeberry (Phytolacca americana)
Polygonum_sp._Smartweed
Polygonum sp. Smartweed (infested field)
Poorjoe_(Diodia_teres)
Poorjoe (Diodia teres)
Poppy,_corn/Poppy,_field
Poppy, corn; Dahoon; Papaver rhoeas L.; Poppy, field; Shaka'ek anno'man; Shakeek (FNE)
Poppy,_prickly_long-headed_1
Prickly long-headed poppy; Papaver argemone L.; Poppy, prickly long-headed (FNE)
Poppy,_prickly_long-headed_2
Prickly long-headed poppy; Papaver argemone L.; Poppy, prickly long-headed (FNE)
Potamogeton_distinctus
Potamogeton distinctus (FRW)
Povertyweed_(Iva_axillaris)
Povertyweed (Iva axillaris); adult (Dryland Crops) (Steven Dewey, Utah State University)
Povertyweed_(Iva_axillaris)
Povertyweed (Iva axillaris); adult (Dryland Crops) (Steven Dewey, Utah State University)
Povertyweed_(Iva_axillaris)
Povertyweed (Iva axillaris); flower (Dryland Crops) (Steven Dewey, Utah State University)
Povertyweed_(Iva_axillaris)
Povertyweed (Iva axillaris); seedling (Dryland Crops) (Steven Dewey, Utah State University)
Prairie_junegrass
Prairie junegrass (Lair, Colorado State University)
Prairie_sandreed
Prairie sandreed (Lair, Colorado State University)
Prairie_sandreed,_hairy_ligule
Prairie sandreed, hairy ligule (Lair, Colorado State University)
Prairie_sandreed_panicle
Prairie sandreed panicle (Lair, Colorado State University)
Prickly_lettuce, Lactuca_serriola
Prickly lettuce adult, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)
Prickly_lettuce, Lactuca_serriola
Prickly lettuce leaf, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)
Prickly_lettuce, Lactuca_serriola
Prickly lettuce field, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)
Prickly_lettuce, Lactuca_serriola
Prickly lettuce seedling, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)
Prickly_lettuce_1
Prickly lettuce; Khsaiseh; Lactuca scariola L.; Lactuca serriola L.; Libbeina (FNE)
Prickly_lettuce_2
Prickly lettuce; Khsaiseh; Lactuca scariola L.; Lactuca serriola L.; Libbeina (FNE)
Prickly_Pear_Cactus
Prickly Pear Cactus (L. L. Berry, Colorado State University)
Prickly_Pear_cactus
Prickly Pear cactus (Lair, Colorado State University)
Prickly_Pear_Cactus_infestation_of_pasture
Prickly Pear Cactus infestation of pasture (L. L. Berry, Colorado State University)
prickly_sida_(sida_spinosa)
prickly sida (sida spinosa)
prostrate_vervain_(Verbena_rigida)
prostrate vervain (Verbena rigida)
Pubescent_wheatgrass_bunch
Pubescent wheatgrass bunch (R. F. Jepson, Colorado State University)
Pubescent_wheatgrass_spikelets
Pubescent wheatgrass spikelets (R. F. Jepson, Colorado State University)
Puncture_Vine
Puncture Vine (H. F. Schwartz, Colorado State University)
Puncture_vine
Puncture vine (H. F. Schwartz, Colorado State University)
Puncture_vine
Puncture vine (H. F. Schwartz, Colorado State University)
Puncture_vine
Puncture vine (H. F. Schwartz, Colorado State University)
Puncture_vine
Puncture vine (L. L. Berry, Colorado State University)
Puncture_vine
Puncture vine; Kharshoom-an-naga; Shiqshiq; Tribulus terrestris L. (FNE)
Puncture_vine/Caltrops_(Zygophyllaceae,_Tribulus_terrestris_L.)
Puncture vine/Caltrops (Zygophyllaceae, Tribulus terrestris L.)(FAW) )
(Drawing)
Puncture_vine_(Goat's_Head)
Puncture vine (Goat's Head) (L. L. Berry, Colorado State University)
Puncture_vine_(Tribulus_terrestris)
Puncture vine (Tribulus terrestris); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Puncture_vine_(Tribulus_terrestris)
Puncture vine (Tribulus terrestris); flower and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)
Puncture_vine_flower
Puncture vine flower (L. L. Berry, Colorado State University)
Puncture_vine_flowers
Puncture vine flowers (P. Westra, Colorado State University)
Puncture_vine_plant
Puncture vine plant (G. Y. Frissoe, Colorado State University)
Puncture_vine_plant_and_true_leaf
Puncture vine plant and true leaf (P. Westra, Colorado State University)
Puncture_vine_seed
Puncture vine seed (L. L. Berry, Colorado State University)
Puncture_vine_seed_body_and_spines
Puncture vine seed body and spines (P. Westra, Colorado State University)
Puncture_vine_seedling
Puncture vine seedling (G. Y. Frissoe, Colorado State University)
Puncture_vine_seedling_and_cotyledons
Puncture vine seedling and cotyledons (P. Westra, Colorado State University)
Puncture_vine_seeds
Puncture vine seeds (H. F. Schwartz, Colorado State University)
Puncturevine_+_onion
Puncturevine + onion (H. F. Schwartz, Colorado State University)
Purple_gooseberry_(Sol_anaceae,_Physalis_philadelphica_Lam.)
Purple gooseberry (Sol anaceae, Physalis philadelphica Lam.)(FAW) )
(Drawing)
Purple_locoweed
Purple locoweed (Lair, Colorado State University)
Purple_Loosestrife
Purple Loosestrife (L. L. Berry, Colorado State University)
Purple_Loosestrife
Purple Loosestrife (L. L. Berry, Colorado State University)
Purple_loosestrife, Lythrum_salicaria
Purple loosestrife adult, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)
Purple_loosestrife, Lythrum_salicaria
Purple loosestrife flower, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)
Purple_loosestrife, Lythrum_salicaria
Purple loosestrife flower, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)
Purple_loosestrife, Lythrum_salicaria
Purple loosestrife leaf, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)
Purple_Loosestrife,_Lythrum_salicaria
Purple Loosestrife, Lythrum salicaria (L. L. Berry, Colorado State University)
Purple_Loosestrife,_Lythrum_salicaria
Purple Loosestrife, Lythrum salicaria (L. L. Berry, Colorado State University)
Purple_Loosestrife_infestation
Purple Loosestrife infestation (L. L. Berry, Colorado State University)
Purple_nutsedge_(Cyperaceae,_Cyperus_rotundus_L.)
Purple nutsedge (Cyperaceae, Cyperus rotundus L.)(FAW) )
(Drawing)
purple_nutsedge_(Cyperus_rotundus)
purple nutsedge (Cyperus rotundus)
Purple_vetch
Purple vetch (H. F. Schwartz, Colorado State University)
Purselane,_common
Common purselane; Baklah; Portulaca oleracea L.; Purselane, common; Rigla (FNE)
Purslane,_common_(Portulaca_oleracea)
Purslane, common (Portulaca oleracea); adult (Yard and Garden) (Steven Dewey, Utah State University)
Purslane,_common_(Portulaca_oleracea)
Purslane, common (Portulaca oleracea); seedling (Yard and Garden) (Steven Dewey, Utah State University)
Purslane,_common_(Portulaca_oleracea)
Purslane, common (Portulaca oleracea); seedling (Yard and Garden) (Steven Dewey, Utah State University)
Purslane_(Portulacaceae,_Portulaca_oleracea_L.)
Purslane (Portulacaceae, Portulaca oleracea L.)(FAW) )
(Drawing)
Purslane_+_onion
Purslane + onion (H. F. Schwartz, Colorado State University)
Purslane_+_onion
Purslane + onion (H. F. Schwartz, Colorado State University)
Purslane_plant
Purslane plant (H. F. Schwartz, Colorado State University)
Purslane_seedling
Purslane seedling (R. G. Wilson, Colorado State University)
Quackgrass_(Elytrigia_repens)
Quackgrass (Elytrigia repens); adult (Turf) (Steven Dewey, Utah State University)
Quackgrass_(Elytrigia_repens)
Quackgrass (Elytrigia repens); adult (Turf) (Steven Dewey, Utah State University)
Quackgrass_(Elytrigia_repens)
Quackgrass (Elytrigia repens); flower (Turf) (Steven Dewey, Utah State University)
Quackgrass_(Elytrigia_repens)
Quackgrass (Elytrigia repens); roots (Turf) (Steven Dewey, Utah State University)
Quackgrass_seeds
Quackgrass seeds (H. F. Schwartz, Colorado State University)
Queen_Anne's_Lace,_Daucus_carota
Queen Anne's Lace, Daucus carota (L. L. Berry, Colorado State University)
Queen_Anne's_Lace,_Daucus_carota
Queen Anne's Lace, Daucus carota (L. L. Berry, Colorado State University)
Rabbitbrush_(Chrysothamnus_spp.)
Rabbitbrush (Chrysothamnus spp.); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Rabbitbrush_(Chrysothamnus_spp.)
Rabbitbrush (Chrysothamnus spp.); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
Rabbitbrush_(Chrysothamnus_spp.)
Rabbitbrush (Chrysothamnus spp.); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
Rabbitbrush_(Chrysothamnus_spp.)
Rabbitbrush (Chrysothamnus spp.); leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)
Rabbitfoot_grass_(Polypogon_monspeliensis)
Rabbitfoot grass (Polypogon monspeliensis); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Rabbitfoot_grass_(Polypogon_monspeliensis)
Rabbitfoot grass (Polypogon monspeliensis); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Rabbitfoot_grass_(Polypogon_monspeliensis)
Rabbitfoot grass (Polypogon monspeliensis); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Radish,_wild/White_charlock
Wild radish; Charlock, white; Radish, wild; Raphanus landra Moretti ex DC. ; Raphanus maritimus Sm.; Raphanus raphanistrum L.; Raphanus rostratus DC.; White charlock (FNE)
Ragweed,_western_(Ambrosia_psilostachya)
Ragweed, western (Ambrosia psilostachya); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Ragweed,_western_(Ambrosia_psilostachya)
Ragweed, western (Ambrosia psilostachya); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Ragweed,_western_(Ambrosia_psilostachya)
Ragweed, western (Ambrosia psilostachya); flower and leaf (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Red_clover_seeds
Red clover seeds (H. F. Schwartz, Colorado State University)
Red_sorrel_(Rumex_acetosella)
Red sorrel (Rumex acetosella)
Red_Stem_Filaree
Red Stem Filaree (H. F. Schwartz, Colorado State University)
Redroot_Pigweed
Redroot Pigweed (H. F. Schwartz, Colorado State University)
Redroot_pigweed,_2-leaf_stage
Redroot pigweed, 2-leaf stage (P. Westra, Colorado State University)
Redroot_pigweed,_cotyledon_stage
Redroot pigweed, cotyledon stage (P. Westra, Colorado State University)
Redroot_pigweed,_intermediate_size
Redroot pigweed, intermediate size (P. Westra, Colorado State University)
redroot_pigweed_(Amaranthus_retroflexus)
redroot pigweed (Amaranthus retroflexus)
Redroot_pigweed_flowering_with_pollen
Redroot pigweed flowering with pollen (P. Westra, Colorado State University)
Redroot_pigweed_infestation_in_corn_field
Redroot pigweed infestation in corn field (P. Westra, Colorado State University)
Redroot_pigweed_mixed_with_grass_weeds
Redroot pigweed mixed with grass weeds (P. Westra, Colorado State University)
Redroot_pigweed_plant
Redroot pigweed plant (H. F. Schwartz, Colorado State University)
Redroot_pigweed_plant_and_seed
Redroot pigweed plant and seed (G. Y. Frissoe, Colorado State University)
Redstem_filaree_(Erodium_cicutarium)
Redstem filaree (Erodium cicutarium)
Redstem_filaree_in_onion
Redstem filaree in onion (H. F. Schwartz, Colorado State University)
redvine_(Brunnichia_cirrhosa)
redvine (Brunnichia cirrhosa)
Ridolfia_segetum_Moris.
Ridolfia segetum Moris. (FNE)
Rose,_wild_(Rosa_multiflora)
Rose, wild (Rosa multiflora); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Rottboellia_cochinchinensis
Rottboellia cochinchinensis (FAO_MTG)
Rough_pigweed_seeds
Rough pigweed seeds (H. F. Schwartz, Colorado State University)
Russian_Knapweed
Russian Knapweed (H. F. Schwartz, Colorado State University)
Russian_Knapweed,_7'_deep_root_pit
Russian Knapweed, 7' deep root pit (K. G. Beck, Colorado State University)
Russian_Knapweed,_crown_&_root_section
Russian Knapweed, crown & root section (K. G. Beck, Colorado State University)
Russian_Knapweed,_mature_plant_with_flowers_and_buds
Russian Knapweed, mature plant with flowers and buds (L. L. Berry, Colorado State University)
Russian_Knapweed,_stem_and_leaf_fuzz_or_knap
Russian Knapweed, stem and leaf fuzz or knap (L. L. Berry, Colorado State University)
Russian_Knapweed_buds_in_April
Russian Knapweed buds in April (K. G. Beck, Colorado State University)
Russian_Knapweed_flowering
Russian Knapweed flowering (K. G. Beck, Colorado State University)
Russian_Knapweed_infestation
Russian Knapweed infestation (L. L. Berry, Colorado State University)
Russian_Knapweed_rosette,_vegetative_reproduction
Russian Knapweed rosette, vegetative reproduction (K. G. Beck, Colorado State University)
Russian_Knapweed_rosette_from_root_stock
Russian Knapweed rosette from root stock (L. L. Berry, Colorado State University)
Russian_Knapweed_seedling
Russian Knapweed seedling (L. L. Berry, Colorado State University)
Russian_knapweed_seeds
Russian knapweed seeds (H. F. Schwartz, Colorado State University)
Russian_Olive,_Eleagnus_angustifolia
Russian Olive, Eleagnus angustifolia (L. L. Berry, Colorado State University)
Russian_Thistle_(Tumbleweed)
Russian Thistle (Tumbleweed) (H. F. Schwartz, Colorado State University)
Russian_thistle_flower
Russian thistle flower (P. Westra, Colorado State University)
Russian_thistle_in_dry_beans
Russian thistle in dry beans (H. F. Schwartz, Colorado State University)
Russian_thistle_in_dry_beans
Russian thistle in dry beans (H. F. Schwartz, Colorado State University)
Russian_thistle_in_dry_beans
Russian thistle in dry beans (H. F. Schwartz, Colorado State University)
Russian_thistle_in_onion
Russian thistle in onion (H. F. Schwartz, Colorado State University)
Russian_thistle_plant
Russian thistle plant (G. Y. Frissoe, Colorado State University)
Russian_thistle_seedling
Russian thistle seedling (P. Westra, Colorado State University)
Russian_thistle_seedling
Russian thistle seedling (P. Westra, Colorado State University)
Russian_thistle_seedling
Russian thistle seedling (S. J. Nissen, Colorado State University)
Russian_thistle_seeds
Russian thistle seeds (H. F. Schwartz, Colorado State University)
Russian_wildrye
Russian wildrye (Lair, Colorado State University)
Russian_wildrye_bunches
Russian wildrye bunches (R. F. Jepson, Colorado State University)
Russian_wildrye_spike
Russian wildrye spike (Lair, Colorado State University)
Rye,_feral_(Secale_cereale)
Rye, feral (Secale cereale); adult (Dryland Crops) (Steven Dewey, Utah State University)
Rye,_feral_(Secale_cereale)
Rye, feral (Secale cereale); flower (Dryland Crops) (Steven Dewey, Utah State University)
Rye,_feral_(Secale_cereale)
Rye, feral (Secale cereale); seeds (Dryland Crops) (Steven Dewey, Utah State University)
Rye_in_wheat
Rye in wheat (H. F. Schwartz, Colorado State University)
Rye-grass,_Wymmera
Rye-grass, Wymmera; Lolium rigidurn Gaud.; Shahlah; Wymmera rye-grass (FNE)
Sage,_Syrian
Syrian sage; Khw'aikhah; Sage, Syrian; Salvia syriaca L. (FNE)
Sage_in_dry_beans
Sage in dry beans (H. F. Schwartz, Colorado State University)
Sagebrush,_big_(Artemisia_tridentata)
Sagebrush, big (Artemisia tridentata); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Sagebrush,_big_(Artemisia_tridentata)
Sagebrush, big (Artemisia tridentata); flower and leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)
Sagittaria_pygmaea
Sagittaria pygmaea (FRW)
Sagittaria_trifolia
Sagittaria trifolia (FRW)
Salsify,_western
Salsify, western (Tragopogon dubius); adult (Dryland Crops) (Steven Dewey, Utah State University)
Salsify,_western
Salsify, western (Tragopogon dubius); flower/seeds (Dryland Crops) (Steven Dewey, Utah State University)
Saltcedar_(Tamarix_ramosissima)
Saltcedar (Tamarix ramosissima); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Saltcedar_(Tamarix_ramosissima)
Saltcedar (Tamarix ramosissima); flower (Wildland/Recreation) (Steven Dewey, Utah State University)
Saltcedar_(Tamarix_ramosissima)
Saltcedar (Tamarix ramosissima); flower (Wildland/Recreation) (Steven Dewey, Utah State University)
Saltgrass
Saltgrass (Lair, Colorado State University)
Saltgrass_(Distichlis_spicata)
Saltgrass (Distichlis spicata); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Saltgrass_(Distichlis_spicata)
Saltgrass (Distichlis spicata); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Saltgrass_(Distichlis_spicata)
Saltgrass (Distichlis spicata); leaf (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Saltgrass_(Distichlis_spicata)
Saltgrass (Distichlis spicata); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Salvinia_molesta,_closeup_of_plants
Salvinia molesta, closeup of plants (FAO_MTG)
Sand_bluestem_raceme
Sand bluestem raceme (Lair, Colorado State University)
Sandbur
Sandbur (H. F. Schwartz, Colorado State University)
Sandbur
Sandbur (H. F. Schwartz, Colorado State University)
Sandbur
Sandbur (Lair, Colorado State University)
Sandbur_(Cenchrus_incertus)
Sandbur (Cenchrus incertus); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Sandbur_(Cenchrus_incertus)
Sandbur (Cenchrus incertus); flower (Irrigated Crops) (Steven Dewey, Utah State University)
Sandbur_(Cenchrus_incertus)
Sandbur (Cenchrus incertus); flower (Irrigated Crops) (Steven Dewey, Utah State University)
Sandbur_(Cenchrus_incertus)
Sandbur (Cenchrus incertus); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Sandbur_plant,_medium_sized
Sandbur plant, medium sized (P. Westra, Colorado State University)
Sandbur_seedheads
Sandbur seedheads (P. Westra, Colorado State University)
Sandbur_seedheads
Sandbur seedheads (P. Westra, Colorado State University)
Sandbur_seedling
Sandbur seedling (P. Westra, Colorado State University)
Sandbur_seedling,_medium_sized
Sandbur seedling, medium sized (P. Westra, Colorado State University)
Sandbur_seedlings
Sandbur seedlings (L. L. Berry, Colorado State University)
Sandbur_seeds
Sandbur seeds (H. F. Schwartz, Colorado State University)
Sandbur_seeds
Sandbur seeds (L. L. Berry, Colorado State University)
Sandbur_weed
Sandbur weed (H. F. Schwartz, Colorado State University)
Sandbur_with_purple_color_at_base_of_plant
Sandbur with purple color at base of plant (L. L. Berry, Colorado State University)
Scarlet_Globe_Mallow
Scarlet Globe Mallow (G. Y. Frissoe, Colorado State University)
Scarlet_Globe_Mallow
Scarlet Globe Mallow (S. J. Nissen, Colorado State University)
Scarlet_Globe_Mallow
Scarlet Globe Mallow (S. J. Nissen, Colorado State University)
Scarlet_Globe_Mallow
Scarlet Globe Mallow (S. J. Nissen, Colorado State University)
Scarlet_Globe_Mallow
Scarlet Globe Mallow (S. J. Nissen, Colorado State University)
Scarlet_Globe_Mallow
Scarlet Globe Mallow (S. J. Nissen, Colorado State University)
Scirpus_juncoides
Scirpus juncoides (FRW)
Scirpus_maritimus
Scirpus maritimus (FRW)
Scotch_Thistle
Scotch Thistle (L. L. Berry, Colorado State University)
Scotch_Thistle
Scotch Thistle (L. L. Berry, Colorado State University)
Scotch_Thistle_flower_and_bud
Scotch Thistle flower and bud (L. L. Berry, Colorado State University)
Scouringrush_(Equisetum_hyemale)
Scouringrush (Equisetum hyemale); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Scouringrush_(Equisetum_hyemale)
Scouringrush (Equisetum hyemale); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Scouringrush_(Equisetum_hyemale)
Scouringrush (Equisetum hyemale); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Scouringrush_(Equisetum_hyemale)
Scouringrush (Equisetum hyemale); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Sea_beet
Sea beet; Beta vulgaris L.; Salq (FNE)
Sedge_seed_head
Sedge seed head (Lair, Colorado State University)
Setaria_faberi_giant_foxtail
Setaria faberi giant foxtail (infested field)
Setaria_spp._Foxtail
Setaria spp. Foxtail (panicles)
Shattercane
Shattercane (H. F. Schwartz, Colorado State University)
Shattercane_in_corn
Shattercane in corn (P. Westra, Colorado State University)
Shattercane_in_corn
Shattercane in corn (P. Westra, Colorado State University)
Shattercane_plant
Shattercane plant (H. F. Schwartz, Colorado State University)
Shattercane_seed_head
Shattercane seed head (P. Westra, Colorado State University)
Shepherd's_purse_in_flower
Shepherd's purse in flower (P. Westra, Colorado State University)
Shepherds_needle
Shepherds needle; Musht el Ra'ey; Scandix brachycarpa Guss.; Scandix hispanica Boiss.; Scandix macrorhyncha C.A.Meyer; Scandix pecten-veneris L. (FNE)
Shepherd's_purse_(Capsella_bursa-pastoris)
Shepherd's purse (Capsella bursa-pastoris); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Shepherd's_purse_(Capsella_bursa-pastoris)
Shepherd's purse (Capsella bursa-pastoris); flower and fruit (Irrigated Crops) (Steven Dewey, Utah State University)
Shepherd's_purse_(Capsella_bursa-pastoris)
Shepherd's purse (Capsella bursa-pastoris); fruit (Irrigated Crops) (Steven Dewey, Utah State University)
Shepherd's_purse_(Capsella_bursa-pastoris)
Shepherd's purse (Capsella bursa-pastoris); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Shepherd's_purse_(Cruciferae,_Capsella_bursa-pastoris_L._Medic.)
Shepherd's purse (Cruciferae, Capsella bursa-pastoris (L.)Medic.)(FAW) )
(Drawing)
Shepherd's_purse_1
Shepherd's purse; Capsella bursa-pastoris (L.)Medik.; Kees erradi; Shantet erradi (FNE)
Shepherd's_purse_2
Shepherd's purse; Capsella bursa-pastoris (L.)Medik.; Kees erradi; Shantet erradi (FNE)
shepherdspurse_(Capsella_bursa-pastoris)
shepherdspurse (Capsella bursa-pastoris)
showy_crotalaria_(Crotalaria_spectabilis)
showy crotalaria (Crotalaria spectabilis)
Showy_milkweed,_Asclepias_speciosa
Showy milkweed adult, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Showy_milkweed,_Asclepias_speciosa
Showy milkweed flower, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Showy_milkweed,_Asclepias_speciosa
Showy milkweed fruit/seeds, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Showy_milkweed,_Asclepias_speciosa
Showy milkweed flower, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
sicklepod_(Cassia_obtusifolia)
sicklepod (Cassia obtusifolia)
Sideoats_grama
Sideoats grama (Lair, Colorado State University)
Sideoats_grama
Sideoats grama (Lair, Colorado State University)
Sideoats_grama_spike
Sideoats grama spike (Lair, Colorado State University)
Silver_Sage,_Artemisia_frigida
Silver Sage, Artemisia frigida (L. L. Berry, Colorado State University)
Silverleaf_nightshade_(Solanum_elaeagnifolium)
silverleaf nightshade (Solanum elaeagnifolium)
Skeletonleaf_Bursage
Skeletonleaf Bursage (L. L. Berry, Colorado State University)
Skeletonleaf_Bursage_root_system
Skeletonleaf Bursage root system (L. L. Berry, Colorado State University)
Skeletonleaf_seed_head
Skeletonleaf seed head (L. L. Berry, Colorado State University)
Skeletonleaf_seedling
Skeletonleaf seedling (L. L. Berry, Colorado State University)
Skeletonweed,_rush_(Chondrilla_juncea)
Skeletonweed, rush (Chondrilla juncea); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Skeletonweed,_rush_(Chondrilla_juncea)
Skeletonweed, rush (Chondrilla juncea); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Smallflower_morningglory_(Jaquemontia_tamnifolia)
Smallflower morningglory (Jaquemontia tamnifolia)
Smooth_brome
Smooth brome (Lair, Colorado State University)
Smooth_brome_ligule
Smooth brome ligule (R. F. Jepson, Colorado State University)
Smooth_brome_panicle
Smooth brome panicle (Lair, Colorado State University)
Smooth_brome_rhizome
Smooth brome rhizome (R. F. Jepson, Colorado State University)
Smooth_groundcherry
Smooth groundcherry (G. Y. Frissoe, Colorado State University)
Smooth_groundcherry_(Physalis_subglabrata)
Smooth groundcherry (Physalis subglabrata)
Smooth_pigweed_(Amaranthaceae,_Amaranthus_hybridus_L.)
Smooth pigweed (Amaranthaceae, Amaranthus hybridus L.)(FAW) )
(Drawing)
Snakeweed,_broom_(Gutierrezia_sarothrae)
Snakeweed, broom (Gutierrezia sarothrae); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Sodon_apple_(Sol_anaceae,_Solanum_incanum_L.)
Sodon apple (Sol anaceae, Solanum incanum L.)(FAW) )
(Drawing)
Solanum_ptycanthum;_black_nightshade
Solanum ptycanthum; black nightshade (seedling)
Solanum_ptycanthum;_black_nightshade
Solanum ptycanthum; black nightshade (fully grown plant)
Sorghum_halepense,_shoot_base_and_young_rhizome
Sorghum halepense, shoot base and young rhizome (FAO_MTG)
Sow_thistle_(Compositae,_Sonchus_oleraceus_L.)
Sow thistle (Compositae, Sonchus oleraceus L.)(FAW) )
(Drawing)
Sowthistle,_annual_(Sonchus_oleraceus)
Sowthistle, annual (Sonchus oleraceus); adult (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_annual_(Sonchus_oleraceus)
Sowthistle, annual (Sonchus oleraceus); flower (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_annual_(Sonchus_oleraceus)
Sowthistle, annual (Sonchus oleraceus); flower and seeds (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_annual_(Sonchus_oleraceus)
Sowthistle, annual (Sonchus oleraceus); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_perennial_(Sonchus_arvensis)
Sowthistle, perennial (Sonchus arvensis); adult (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_perennial_(Sonchus_arvensis)
Sowthistle, perennial (Sonchus arvensis); flower (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_perennial_(Sonchus_arvensis)
Sowthistle, perennial (Sonchus arvensis); flower (Yard and Garden) (Steven Dewey, Utah State University)
Sowthistle,_perennial_(Sonchus_arvensis)
Sowthistle, perennial (Sonchus arvensis); roots and leaf (Yard and Garden) (Steven Dewey, Utah State University)
sowthistle_(Sonchus_sp.)_
sowthistle (Sonchus sp.)
Spanish_needles_(Bidens_bipinnata)
Spanish needles (Bidens bipinnata)
Speedwell,_bilobed_(Veronica_biloba)
Speedwell, bilobed (Veronica biloba); adult (Dryland Crops) (Steven Dewey, Utah State University)
Speedwell,_bilobed_(Veronica_biloba)
Speedwell, bilobed (Veronica biloba); flower and leaf (Dryland Crops) (Steven Dewey, Utah State University)
Speedwell,_white
Speedwell, white; Veronica cymbalaria Bodard; Veronica polita Fries.; White speedwell (FNE)
Sphenoclea_zeylanica
Sphenoclea zeylanica (FRW)
Spider_flower_(Capparaceae,_Gynandropsis_gynandra_L._Briq.)
Spider flower (Capparaceae, Gynandropsis gynandra (L.)Briq.)(FAW) )
(Drawing)
spiny_amarnth_(Amaranthus_spinosus)
spiny amarnth (Amaranthus spinosus)
Spotted_Knapweed
Spotted Knapweed (H. F. Schwartz, Colorado State University)
Spotted_Knapweed
Spotted Knapweed (K. G. Beck, Colorado State University)
Spotted_Knapweed
Spotted Knapweed (L. L. Berry, Colorado State University)
Spotted_Knapweed
Spotted Knapweed (L. L. Berry, Colorado State University)
Spotted_Knapweed
Spotted Knapweed (L. L. Berry, Colorado State University)
Spotted_Knapweed
Spotted Knapweed (L. L. Berry, Colorado State University)
Spotted_Knapweed_flowers
Spotted Knapweed flowers (K. G. Beck, Colorado State University)
Spotted_Knapweed_infestation_and_alleopathic_effects
Spotted Knapweed infestation and alleopathic effects (L. L. Berry, Colorado State University)
Spotted_Knapweed_rosette
Spotted Knapweed rosette (L. L. Berry, Colorado State University)
Spotted_Knapweed_seed_head_with_black_bracts
Spotted Knapweed seed head with black bracts (L. L. Berry, Colorado State University)
spotted_spurge_(Euphorbia_maculata)
spotted spurge (Euphorbia maculata)
Spurge,_blue_(Euphorbia_myrsinites)
Spurge, blue (Euphorbia myrsinites); adult (Yard and Garden) (Steven Dewey, Utah State University)
Spurge,_blue_(Euphorbia_myrsinites)
Spurge, blue (Euphorbia myrsinites); flower (Yard and Garden) (Steven Dewey, Utah State University)
Spurge,_blue_(Euphorbia_myrsinites)
Spurge, blue (Euphorbia myrsinites); flower (Yard and Garden) (Steven Dewey, Utah State University)
Spurge,_leafy_(Euphorbia_esula)
Spurge, leafy (Euphorbia esula); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Spurge,_leafy_(Euphorbia_esula)
Spurge, leafy (Euphorbia esula); fruit and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)
Spurge,_leafy_(Euphorbia_esula)
Spurge, leafy (Euphorbia esula); flower and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)
Spurge,_leafy_(Euphorbia_esula)
Spurge, leafy (Euphorbia esula); flower and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)
Spurge,_petty
Petty spurge; Anagallis caerulea Schreber; Euphorbia peplus L.; Ma'alakah; Spurge, petty (FNE)
Spurge,_prostrate_(Euphorbia_spp.)
Spurge, prostrate (Euphorbia spp.); adult (Turf) (Steven Dewey, Utah State University)
Spurge,_prostrate_(Euphorbia_spp.)
Spurge, prostrate (Euphorbia spp.); leaf (Turf) (Steven Dewey, Utah State University)
Spurge,_prostrate_(Euphorbia_spp.)
Spurge, prostrate (Euphorbia spp.); seedling (Turf) (Steven Dewey, Utah State University)
Spurge,_prostrate_(Euphorbia_spp.)
Spurge, prostrate (Euphorbia spp.); seedling (Turf) (Steven Dewey, Utah State University)
Spurge,_sun
Sun spurge; A'dah; Elbena; Euphorbia helioscopia L.; Libbein; Spurge, sun (FNE)
Spurge,_toothed_(Euphorbia_dentata)
Spurge, toothed (Euphorbia dentata); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Spurge,_toothed_(Euphorbia_dentata)
Spurge, toothed (Euphorbia dentata); flower (Irrigated Crops) (Steven Dewey, Utah State University)
Spurge,_toothed_(Euphorbia_dentata)
Spurge, toothed (Euphorbia dentata); leaf (Irrigated Crops) (Steven Dewey, Utah State University)
Spurge,_toothed_(Euphorbia_dentata)
Spurge, toothed (Euphorbia dentata); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Spurred_Anoda
Spurred Anoda (H. F. Schwartz, Colorado State University)
Spurred_anoda_seed_capsule
Spurred anoda seed capsule (P. Westra, Colorado State University)
Spurred_anoda_seedlings_and_cotyledons
Spurred anoda seedlings and cotyledons (P. Westra, Colorado State University)
Spurred_anoda_seedlings_and_cotyledons
Spurred anoda seedlings and cotyledons (P. Westra, Colorado State University)
Spurred_anoda_with_flower
Spurred anoda with flower (P. Westra, Colorado State University)
Spurrey_(Caryophyllaceae,_Spergula_arvensis_L.)
Spurrey (Caryophyllaceae, Spergula arvensis L.)(FAW) )
(Drawing)
Squirreltail
Squirreltail (Lair, Colorado State University)
St._Johnswort
St. Johnswort (L. L. Berry, Colorado State University)
St._Johnswort
St. Johnswort (L. L. Berry, Colorado State University)
St._Johnswort,_Hypericum_perforatum
St. Johnswort, Hypericum perforatum (L. L. Berry, Colorado State University)
St._Johnswort_(Hypericum_perforatum)
St. Johnswort (Hypericum perforatum); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
St._Johnswort_(Hypericum_perforatum)
St. Johnswort (Hypericum perforatum); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
St._Johnswort_(Hypericum_perforatum)
St. Johnswort (Hypericum perforatum); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
St._Johnswort_(Hypericum_perforatum)
St. Johnswort (Hypericum perforatum); leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)
St._Johnswort_flower
St. Johnswort flower (L. L. Berry, Colorado State University)
St._Johnswort_flowers
St. Johnswort flowers (L. L. Berry, Colorado State University)
St._Johnswort_leaves_with_holes
St. Johnswort leaves with holes (L. L. Berry, Colorado State University)
St_John's_wort,_curled_leaved
Curled leaved St John's wort; Araineh; A'ran; Hypericum crispum L.; Hypericum triquetrifolium Turra.; St John's wort, curled leaved (FNE)
Star_grass_(Gramineae,_Cynodon_nlemfuensis_Vanderyst)
Star grass (Gramineae, Cynodon nlemfuensis Vanderyst)(FAW) )
(Drawing)
Starbur_(Compositae,_Acanthospermum_hispidum_DC.)
Starbur (Compositae, Acanthospermum hispidum DC.)(FAW) )
(Drawing)
Starthistle,_yellow_(Centaurea_solstitialis)
Starthistle, yellow (Centaurea solstitialis); adult (Wildland/Recreation) (Steven Dewey, Utah State University)
Starthistle,_yellow_(Centaurea_solstitialis)
Starthistle, yellow (Centaurea solstitialis); flower (Wildland/Recreation) (Steven Dewey, Utah State University)
Starthistle,_yellow_(Centaurea_solstitialis)
Starthistle, yellow (Centaurea solstitialis); leaf (Wildland/Recreation) (Steven Dewey, Utah State University)
Starthistle,_yellow_(Centaurea_solstitialis)
Starthistle, yellow (Centaurea solstitialis); seedling (Wildland/Recreation) (Steven Dewey, Utah State University)
Stinkgrass_(Eragrostis_cilianensis)
Stinkgrass (Eragrostis cilianensis); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Stinkgrass_panicle
Stinkgrass panicle (Lair, Colorado State University)
Stonecrop,_Sedum_lanceolaatum
Stonecrop, Sedum lanceolaatum (L. L. Berry, Colorado State University)
Striate_Knotweed
Striate Knotweed (H. F. Schwartz, Colorado State University)
Striated_knotweed_plant
Striated knotweed plant (G. Y. Frissoe, Colorado State University)
Striga/Purple_witchweed_(Scrophulariaceae,_Striga_hermonthica_Del._Benth.)
Striga/Purple witchweed (Scrophulariaceae, Striga hermonthica (Del.)Benth.)(FAW) )
(Drawing)
Striga/Red_witchweed_(Scrophulariaceae,_Striga_asiatica_L._Kuntze)
Striga/Red witchweed (Scrophulariaceae, Striga asiatica (L.)Kuntze)(FAW) )
(Drawing)
Striga_asiatica
Striga asiatica (FAO_MTG)
Striga_aspera
Striga aspera (FAO_MTG)
Striga_gesnerioides
Striga gesnerioides (FAO_MTG)
Striga_hermonthica
Striga hermonthica (FAO_MTG)
Sudangrass_seeds
Sudangrass seeds (H. F. Schwartz, Colorado State University)
Sunflower,_wild_(Helianthus_annuus)
Sunflower, wild (Helianthus annuus); adult (Dryland Crops) (Steven Dewey, Utah State University)
Sunflower,_wild_(Helianthus_annuus)
Sunflower, wild (Helianthus annuus); flower and leaf (Dryland Crops) (Steven Dewey, Utah State University)
Sunflower,_wild_(Helianthus_annuus)
Sunflower, wild (Helianthus annuus); seedling (Dryland Crops) (Steven Dewey, Utah State University)
Sunflower,_wild_(Helianthus_annuus)
Sunflower, wild (Helianthus annuus); stem (Dryland Crops) (Steven Dewey, Utah State University)
Sweetclover_(Melilotus_spp.)
Sweetclover (Melilotus spp.); [sweetclover - left; alfalfa - right] leaf (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Sweetclover_(Melilotus_spp.)
Sweetclover (Melilotus spp.); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Sweetclover_(Melilotus_spp.)
Sweetclover (Melilotus spp.); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Sweetclover_(Melilotus_spp.)
Sweetclover (Melilotus spp.); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Swinecress_(Coronopus_didymus)
Swinecress (Coronopus didymus)
Switch_grass
Switch grass (H. F. Schwartz, Colorado State University)
Switch_grass
Switch grass (H. F. Schwartz, Colorado State University)
Switchgrass
Switchgrass (Lair, Colorado State University)
Switchgrass_panicle
Switchgrass panicle (Lair, Colorado State University)
Sword_grass
Sword grass; Alang-alang; Imperata cylindrica (L.)Raeusch. (FNE)
Swordgrass_(Gramineae,_Imperata_cylindrica_L._Raeuschel)
Swordgrass (Gramineae, Imperata cylindrica (L.)Raeuschel)(FAW) )
(Drawing)
Syrian_scabious
Syrian scabious; Cephalaria syr/aca (L.)Schrad.; Scabius, Syrian; Tardan; Ziwan (FNE)
Tall_fescue_patches_in_irrigated_pasture
Tall fescue patches in irrigated pasture (R. F. Jepson, Colorado State University)
Tall_khaki_weed_/Mexican_marigold(Compositae,_Tagetes_minuta_L.)
Tall khaki weed/Mexican marigold (Compositae, Tagetes minuta L. (FAW) )
(Drawing)
Tall_larkspur_(Delphinium_spp.)
Tall larkspur (Delphinium spp.); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Tall_larkspur_(Delphinium_spp.)
Tall larkspur (Delphinium spp.); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
Tall_morningglory_(Ipomoea_purpurea)
Tall morningglory (Ipomoea purpurea)
Tall_wheatgrass_spikelets
Tall wheatgrass spikelets (Lair, Colorado State University)
Tansy,_common_(Tanacetum_vulgare)
Tansy, common (Tanacetum vulgare); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Tansy,_common_(Tanacetum_vulgare)
Tansy, common (Tanacetum vulgare); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Tansy_Mustard
Tansy Mustard (L. L. Berry, Colorado State University)
Teasel_(Dipsacus_laciniatus)
Teasel (Dipsacus laciniatus); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Teasel_(Dipsacus_laciniatus)
Teasel (Dipsacus laciniatus); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Teasel_(Dipsacus_laciniatus)
Teasel (Dipsacus laciniatus); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Teasel_(Dipsacus_laciniatus)
Teasel (Dipsacus laciniatus); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Texas_panicum_(Panicum_texanum)
Texas panicum (Panicum texanum)
Thistle,_bull_(Cirsium_vulgare)
Thistle, bull (Cirsium vulgare); [Bull - left; Canada - right] flowers (Turf) (Steven Dewey, Utah State University)
Thistle,_bull_(Cirsium_vulgare)
Thistle, bull (Cirsium vulgare); flower (Turf) (Steven Dewey, Utah State University)
Thistle,_bull_(Cirsium_vulgare)
Thistle, bull (Cirsium vulgare); leaf (Turf) (Steven Dewey, Utah State University)
Thistle,_bull_(Cirsium_vulgare)
Thistle, bull (Cirsium vulgare); rosettes (Turf) (Steven Dewey, Utah State University)
Thistle,_Canada_(Cirsium_arvense)
Thistle, Canada (Cirsium arvense); adult (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Canada_(Cirsium_arvense)
Thistle, Canada (Cirsium arvense); flower (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Canada_(Cirsium_arvense)
Thistle, Canada (Cirsium arvense); seedling (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Canada_(Cirsium_arvense)
Thistle, Canada (Cirsium arvense); seedling and roots (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_musk_(Carduus_nutans)
Thistle, musk (Carduus nutans); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_musk_(Carduus_nutans)
Thistle, musk (Carduus nutans); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_musk_(Carduus_nutans)
thistle, musk (Carduus nutans); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_musk_(Carduus_nutans)
Thistle, musk (Carduus nutans); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_pale_star_1
Pale star thistle; Centaurea pallescens Del.; Murrar; Thistle, pale star (FNE)
Thistle,_pale_star_2
Pale star thistle; Centaurea pallescens Del.; Murrar; Thistle, pale star (FNE)
Thistle,_Russian_(Salsola_iberica)
Thistle, Russian (Salsola iberica); adult (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Russian_(Salsola_iberica)
Thistle, Russian (Salsola iberica); flower (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Russian_(Salsola_iberica)
Thistle, Russian (Salsola iberica); flower and leaf (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Russian_(Salsola_iberica)
Thistle, Russian (Salsola iberica); seedling and roots (Dryland Crops) (Steven Dewey, Utah State University)
Thistle,_Scotch_(Onopordum_acanthium)
Thistle, Scotch (Onopordum acanthium); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_Scotch_(Onopordum_acanthium)
Thistle, Scotch (Onopordum acanthium); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_Scotch_(Onopordum_acanthium)
Thistle, Scotch (Onopordum acanthium); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Thistle,_sow
Sow thistle; Go'odeid; Hawa; Khas klab; Sonchus oleraceus L.; Thistle, sow (FNE)
Thistle_head
Thistle head (H. F. Schwartz, Colorado State University)
Thorn_apple_(Sol_anaceae,_Datura_stramonium_L.)
Thorn apple (Sol anaceae, Datura stramonium L.)(FAW) )
(Drawing)
Three-awn
Three-awn (Lair, Colorado State University)
Three-awn_flowering_head
Three-awn flowering head (Lair, Colorado State University)
Timothy_flowering_head
Timothy flowering head (Lair, Colorado State University)
Toadflax,_dalmation_(Linaria_dalmatica)
Toadflax, dalmation (Linaria dalmatica); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_dalmation_(Linaria_dalmatica)
Toadflax, dalmation (Linaria dalmatica); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_dalmation_(Linaria_dalmatica)
Toadflax, dalmation (Linaria dalmatica); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_dalmation_(Linaria_dalmatica)
Toadflax, dalmation (Linaria dalmatica); leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_yellow_(Linaria_vulgaris)
Toadflax, yellow (Linaria vulgaris); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_yellow_(Linaria_vulgaris)
Toadflax, yellow (Linaria vulgaris); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_yellow_(Linaria_vulgaris)
Toadflax, yellow (Linaria vulgaris); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toadflax,_yellow_(Linaria_vulgaris)
Toadflax, yellow (Linaria vulgaris); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)
Toothed_leaf_spurge_plant
Toothed leaf spurge plant (H. F. Schwartz, Colorado State University)
Toothed_Spurge
Toothed Spurge (H. F. Schwartz, Colorado State University)
Toothed_spurge,_2-leaf_stage_+_cotyledon
Toothed spurge, 2-leaf stage + cotyledon (P. Westra, Colorado State University)
Toothed_spurge,_flower_and_seed_pod
Toothed spurge, flower and seed pod (P. Westra, Colorado State University)
Toothed_spurge,_medium_size
Toothed spurge, medium size (P. Westra, Colorado State University)
Toothed_spurge_+_onion
Toothed spurge + onion (H. F. Schwartz, Colorado State University)
Toothed_spurge_in_dry_beans
Toothed spurge in dry beans (H. F. Schwartz, Colorado State University)
Toothed_spurge_in_dry_beans
Toothed spurge in dry beans (H. F. Schwartz, Colorado State University)
Toothed_spurge_rust
Toothed spurge rust (H. F. Schwartz, Colorado State University)
Toothed_spurge_seedling
Toothed spurge seedling (P. Westra, Colorado State University)
Torpedograss_(Panicum_repens)
Torpedograss (Panicum repens)
Tropic_croton_(Croton_glandulosus)
Tropic croton (Croton glandulosus)
Trumpetcreeper_(Campsis_radicans)
Trumpetcreeper (Campsis radicans)
Tumble_pigweed_+_onion
Tumble pigweed + onion (H. F. Schwartz, Colorado State University)
Vaseygrass_(Paspalum_urvillei)
Vaseygrass (Paspalum urvillei)
Velvetleaf
Velvetleaf (H. F. Schwartz, Colorado State University)
Velvetleaf_&_pigweed_in_bean_field
Velvetleaf & pigweed in bean field (H. F. Schwartz, Colorado State University)
Velvetleaf_(Abutilon_theophrasti)
Velvetleaf (Abutilon theophrasti); adult (Irrigated Crops) (Steven Dewey, Utah State University)
Velvetleaf_(Abutilon_theophrasti)
Velvetleaf (Abutilon theophrasti); flower (Irrigated Crops) (Steven Dewey, Utah State University)
Velvetleaf_(Abutilon_theophrasti)
Velvetleaf (Abutilon theophrasti); fruit (Irrigated Crops) (Steven Dewey, Utah State University)
Velvetleaf_(Abutilon_theophrasti)
Velvetleaf (Abutilon theophrasti); seedling (Irrigated Crops) (Steven Dewey, Utah State University)
Velvetleaf_+_onion
Velvetleaf + onion (H. F. Schwartz, Colorado State University)
Velvetleaf_in_bean_field
Velvetleaf in bean field (H. F. Schwartz, Colorado State University)
Velvetleaf_in_large_corn
Velvetleaf in large corn (P. Westra, Colorado State University)
Velvetleaf_in_waste_area_in_Morgan_County
Velvetleaf in waste area in Morgan County (P. Westra, Colorado State University)
Velvetleaf_plant
Velvetleaf plant (P. Westra, Colorado State University)
Velvetleaf_plant_and_seed_capsule
Velvetleaf plant and seed capsule (G. Y. Frissoe, Colorado State University)
Velvetleaf_plants_in_small_corn
Velvetleaf plants in small corn (P. Westra, Colorado State University)
Velvetleaf_seed_capsule
Velvetleaf seed capsule (P. Westra, Colorado State University)
Velvetleaf_seedling
Velvetleaf seedling (G. Y. Frissoe, Colorado State University)
Velvetleaf_seedling
Velvetleaf seedling (P. Westra, Colorado State University)
Venice_Mallow
Venice Mallow (H. F. Schwartz, Colorado State University)
Venice_mallow,_Hibiscus_trionum
Venice mallow adult, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)
Venice_mallow,_Hibiscus_trionum
Venice mallow leaf, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)
Venice_mallow,_Hibiscus_trionum
Venice mallow fruit and seeds, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)
Venice_mallow_+_onion
Venice mallow + onion (H. F. Schwartz, Colorado State University)
Venice_mallow_flower
Venice mallow flower (P. Westra, Colorado State University)
Venice_mallow_plant
Venice mallow plant (P. Westra, Colorado State University)
Venice_mallow_seedling
Venice mallow seedling (P. Westra, Colorado State University)
Venice_mallow_seedlings_in_onion_field
Venice mallow seedlings in onion field (P. Westra, Colorado State University)
Venive_mallow,_Hibiscus_trionum
Venice mallow flower, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)
Vetch,_broad-leaved
Broad-leaved vetch ; Vetch, broad-leaved; Vicia narbonensis L.; Vicia serratifolia Jacq. (FNE)
Violet,_English_(Viola_odorata)
Violet, English (Viola odorata); adult (Turf) (Steven Dewey, Utah State University)
Virginia_copperleaf_(Acalypha_virginica)
Virginia copperleaf (Acalypha virginica)
Virginia_Ground_Cherry
Virginia Ground Cherry (H. F. Schwartz, Colorado State University)
Virginia_pepperweed_(Lepidium_virginicum)
Virginia pepperweed (Lepidium virginicum)
Volunteer_corn_in_dry_beans
Volunteer corn in dry beans (H. F. Schwartz, Colorado State University)
Volunteer_Field_Corn
Volunteer Field Corn (H. F. Schwartz, Colorado State University)
Volunteer_Rye
Volunteer Rye (H. F. Schwartz, Colorado State University)
Volunteer_rye
Volunteer rye (P. Westra, Colorado State University)
Volunteer_rye_in_wheat
Volunteer rye in wheat (P. Westra, Colorado State University)
Volunteer_rye_in_wheat
Volunteer rye in wheat (P. Westra, Colorado State University)
Volunteer_rye_overtops_wheat
Volunteer rye overtops wheat (P. Westra, Colorado State University)
Volunteer_rye_seed
Volunteer rye seed (P. Westra, Colorado State University)
Volunteer_rye_seedlings
Volunteer rye seedlings (P. Westra, Colorado State University)
Volunteer_rye-wheat_competition
Volunteer rye-wheat competition (P. Westra, Colorado State University)
Wandering_jew_(Commelinaceae,_Commehna_benghalensis_L.)
Wandering jew (Commelinaceae, Commehna benghalensis L.)(FAW) )
(Drawing)
Warm-season_bunchgrasses
Warm-season bunchgrasses (R. F. Jepson, Colorado State University)
Watergrass_(Cyperaceae,_Cyperus_blysmoides_C.B._CI.)
Watergrass (Cyperaceae, Cyperus blysmoides C.B. CI.)(FAW) )
(Drawing)
Western_Salsify
Western Salsify (H. F. Schwartz, Colorado State University)
Western_Salsify
Western Salsify (H. F. Schwartz, Colorado State University)
Western_salsify_flowers
Western salsify flowers (H. F. Schwartz, Colorado State University)
Western_salsify_flowers
Western salsify flowers (H. F. Schwartz, Colorado State University)
Western_wheatgrass
Western wheatgrass (Lair, Colorado State University)
Western_wheatgrass_(lt)_&_thickspike_wheatgrass_(rt)
Western wheatgrass (lt)& thickspike wheatgrass (rt) (Lair, Colorado State University)
Western_wheatgrass_patch
Western wheatgrass patch (Lair, Colorado State University)
Western_wheatgrass_patch
Western wheatgrass patch (R. F. Jepson, Colorado State University)
Western_wheatgrass_spike
Western wheatgrass spike (Lair, Colorado State University)
White_locoweed
White locoweed (Lair, Colorado State University)
White_Sweetclover,_Melilotus_alba
White Sweetclover, Melilotus alba (L. L. Berry, Colorado State University)
White_top_seeds
White top seeds (H. F. Schwartz, Colorado State University)
White-flowered_field_bindweed
White-flowered field bindweed (P. Westra, Colorado State University)
Whiteheath_aster_(Aster_pilosus)
Whiteheath aster (Aster pilosus)
Wild_Buckwheat
Wild Buckwheat (H. F. Schwartz, Colorado State University)
Wild_buckwheat_seedling
Wild buckwheat seedling (P. Westra, Colorado State University)
Wild_buckwheat_seedling
Wild buckwheat seedling (P. Westra, Colorado State University)
Wild_buckwheat_seeds
Wild buckwheat seeds (H. F. Schwartz, Colorado State University)
Wild_carrot
Wild carrot; Daucus carota (L.); Jazarbarri (FNE)
Wild_carrot_(Daucus_carota)
wild carrot (Daucus carota)
Wild_cucumber_(Echinocystis_lobata)
wild cucumber (Echinocystis lobata)
Wild_finger_millet_(Gramineae,_Eleusine_indica_L._Gaertn.)
Wild finger millet (Gramineae, Eleusine indica (L.)Gaertn.)(FAW) )
(Drawing)
Wild_garlic_(Allum_vineale)
wild garlic (Allum vineale)
Wild_lettuce_(Compositae,_Launaea_cornuta_Oliv._&_Hiern_C._Jeffrey)
Wild lettuce (Compositae, Launaea cornuta (Oliv. & Hiern)C. Jeffrey)(FAW) )
(Drawing)
Wild_lettuce_(Lactuna_scariola)
wild lettuce (Lactuna scariola)
Wild_Mustard
Wild Mustard (H. F. Schwartz, Colorado State University)
Wild_mustard_(Brussica_kaber)
wild mustard (Brussica kaber)
Wild_mustard_plant
Wild mustard plant (G. Y. Frissoe, Colorado State University)
Wild_oat_(Gramineae,_Avena_fatua_L.)
Wild_oat (Gramineae, Avena fatua L.)(FAW) )
(Drawing)
Wild_oat_1
Wild oat; Avena fatua; Avena sterilis L; Khafoor; Shofan barri; Snaisleh (FNE)
Wild_oat_2
Wild oat; Avena fatua; Avena sterilis L; Khafoor; Shofan barri; Snaisleh (FNE)
Wild_oat_diagram
Wild oat diagram (S. J. Nissen, Colorado State University)
Wild_oats_seeds
Wild oats seeds (H. F. Schwartz, Colorado State University)
Wild_Proso_Millet
Wild Proso Millet (H. F. Schwartz, Colorado State University)
Wild_proso_millet,_Panicum_miliaceum
Wild proso millet flower and seeds, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)
Wild_proso_millet,_Panicum_miliaceum
Wild proso millet ligule, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)
Wild_proso_millet,_Panicum_miliaceum
Wild proso millet seedling, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)
Wild_proso_millet,_Panicum_miliaceum
Wild proso millet flower, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)
Wild_proso_millet_heading_dates
Wild proso millet heading dates (P. Westra, Colorado State University)
Wild_proso_millet_in_corn
Wild proso millet in corn (P. Westra, Colorado State University)
Wild_proso_millet_infestation_in_corn
Wild proso millet infestation in corn (P. Westra, Colorado State University)
Wild_proso_millet_overgrowing_corn
Wild proso millet overgrowing corn (P. Westra, Colorado State University)
Wild_proso_millet_plants_in_corn
Wild proso millet plants in corn (P. Westra, Colorado State University)
Wild_proso_millet_seeds
Wild proso millet seeds (P. Westra, Colorado State University)
Wild_proso_millet_setting_seed_in_corn
Wild proso millet setting seed in corn (P. Westra, Colorado State University)
Wild_raddish/White_charlock_(Cruciferae,_Raphanus_raphanistrum_L.)
Wild raddish/White charlock (Cruciferae, Raphanus raphanistrum L. (FAW) )
(Drawing)
Wild_rye_in_winter_wheat
Wild rye in winter wheat (H. F. Schwartz, Colorado State University)
Wild_rye_in_winter_wheat
Wild rye in winter wheat (H. F. Schwartz, Colorado State University)
Wild_Sunflower
Wild Sunflower (H. F. Schwartz, Colorado State University)
Wild_sunflower_in_dry_beans
Wild sunflower in dry beans (H. F. Schwartz, Colorado State University)
Wild_sunflower_seeds
Wild sunflower seeds (H. F. Schwartz, Colorado State University)
Wild_sunflowers_in_dry_beans
Wild sunflowers in dry beans (H. F. Schwartz, Colorado State University)
Wild_watermelon_-_citron_(Citrullus_vulgaris)
Wild watermelon - citron (Citrullus vulgaris)
Willowweed_(Epilobium_spp.)
Willowweed (Epilobium spp.); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Willowweed_(Epilobium_spp.)
Willowweed (Epilobium spp.); fruit/seed (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Winged_pea,_Palestine
Palestine winged pea; Pea, winged, Palestine; Saiba'ah; Tetragonolobus palaestinus Boiss.; Tetragonolobus purpureous Moench.; Winged pea, Palestine (FNE)
Witchgrass
Witchgrass (Lair, Colorado State University)
Witchgrass_(Panicum_capillare)
Witchgrass (Panicum capillare); adult (Yard and Garden) (Steven Dewey, Utah State University)
Witchgrass_(Panicum_capillare)
Witchgrass (Panicum capillare); flower (Yard and Garden) (Steven Dewey, Utah State University)
Witchweed
Witchweed; Odaar; Striga hermonthica (Del.)Benth. (FNE)
witchweed_(Striga_lutea)
witchweed (Striga lutea)
Woad,_dyer's_(Isatis_tinctoria)
Woad, dyer's (Isatis tinctoria); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Woad,_dyer's_(Isatis_tinctoria)
Woad, dyer's (Isatis tinctoria); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Woad,_dyer's_(Isatis_tinctoria)
Woad, dyer's (Isatis tinctoria); flower and fruit (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Woad,_dyer's_(Isatis_tinctoria)
Woad, dyer's (Isatis tinctoria); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)
Wood_sorrel,_yellow
Yellow wood sorrel; Hamd; Hommeid; Oxalis corniculata L.; Oxalis repens Thunb.; Wood sorrel, yellow (FNE)
Woodsorrel,_yellow_(Oxalis_stricta)
Woodsorrel, yellow (Oxalis stricta); flower (Turf) (Steven Dewey, Utah State University)
Woodsorrel,_yellow_(Oxalis_stricta)
Woodsorrel, yellow (Oxalis stricta); leaf (Turf) (Steven Dewey, Utah State University)
Woodsorrel,_yellow_(Oxalis_stricta)
Woodsorrel, yellow (Oxalis stricta); leaf (Turf) (Steven Dewey, Utah State University)
Wooly_croton_(Croton_capitatus)
Wooly croton (Croton capitatus)
Xanthium_strumarium_common_cocklebur
Xanthium strumarium common cocklebur (seedling)
Xanthium_strumarium_common_cocklebur
Xanthium strumarium common cocklebur (infested field)
Yellow,_green,_and_giant_foxtail_heads
Yellow, green, and giant foxtail heads (P. Westra, Colorado State University)
Yellow_Indiangrass
Yellow Indiangrass (Lair, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (H. F. Schwartz, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (H. F. Schwartz, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (H. F. Schwartz, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (H. F. Schwartz, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (H. F. Schwartz, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (H. F. Schwartz, Colorado State University)
Yellow_nutsedge
Yellow nutsedge (P. Westra, Colorado State University)
Yellow_nutsedge_(Cyperaceae,_Cyperus_esculentus_L.)
Yellow nutsedge (Cyperaceae, Cyperus esculentus L.)(FAW) )
(Drawing)
Yellow_nutsedge_(Cyperus_esculentus)
Yellow nutsedge (Cyperus esculentus)
Yellow_nutsedge_in_drybeans
Yellow nutsedge in drybeans (P. Westra, Colorado State University)
Yellow_sweet_clover
Yellow sweet clover (H. F. Schwartz, Colorado State University)
Yellow_Sweetclover,_Melilotus_officinalis
Yellow Sweetclover, Melilotus officinalis (L. L. Berry, Colorado State University)
Yellow_Toadflax
Yellow Toadflax (H. F. Schwartz, Colorado State University)
Yellow_Toadflax
Yellow Toadflax (L. L. Berry, Colorado State University)
Yellow_Toadflax
Yellow Toadflax (L. L. Berry, Colorado State University)
Yellow_Toadflax,_Linaria_vulgaris
Yellow Toadflax, Linaria vulgaris (L. L. Berry, Colorado State University)
Yellow_Toadflax_leaf_shape
Yellow Toadflax leaf shape (K. G. Beck, Colorado State University)
Yellow_Toadflax_with_butter/egg_look_of_flowers
Yellow Toadflax with butter/egg look of flowers (L. L. Berry, Colorado State University)
Yellow_Toadflax_with_root
Yellow Toadflax with root (L. L. Berry, Colorado State University)
Yellow_vetch
Yellow vetch (H. F. Schwartz, Colorado State University)
Yellow_vetchling
Yellow vetchling; Lathyrus aphaca L. (FNE)
Yerba-de-tago_(Eclipta_alba)
Yerba-de-tago (Eclipta alba)