Weeds:Photos

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WEED PEST PHOTO GALLERY


Contents

2_Jointed_goatgrass_plants_from_1_seed_cylinder

2 Jointed goatgrass plants from 1 seed cylinder (P. Westra, Colorado State University)


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2_Leaf_wild_proso_millet_seedling_1

2 Leaf wild proso millet seedling (P. Westra, Colorado State University)


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4_Leaf_wild_proso_millet_seedling_2

4 Leaf wild proso millet seedling (P. Westra, Colorado State University)


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Abutilon_theophrasti_velvetleaf

Abutilon theophrasti velvetleaf (seedling)


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Abutilon_theophrasti_velvetleaf

Abutilon theophrasti velvetleaf (infested field)


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Acanthaceae,_Asystasia_schimperi_T._Anders.

Acanthaceae, Asystasia schimperi T. Anders. (FAW)


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(Drawing)


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Alkali_grass

Alkali grass (Lair, Colorado State University)


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Alkanet,_large_blue

Alkanet, large blue; Anchusa azurea Miller; Anchusa italica Retz.; Hemhem; Khail (FNE)


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Amaranth,_common

Amaranth, common; Amaranthus retroflexus L.; Common amaranth; Urf ed-dik (FNE)


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Amaranth,_green

Amaranth, green; Amaranthus chlorostachys Willd.; Amaranthus hybridus L.; Green amaranth (FNE)


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Amaranth_2

Amaranth (H. F. Schwartz, Colorado State University)


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Amaranth_3

Amaranth (H. F. Schwartz, Colorado State University)


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Amaranth_6

Amaranth (H. F. Schwartz, Colorado State University)


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Amaranthaceae,_Amaranthus_graecizans_L.

Amaranthaceae, Amaranthus graecizans L. (FAW) )


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(Drawing)


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Amaranthus_sp._Pigweed

Amaranthus sp. Pigweed (seedling)


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Amaranthus_sp._Pigweed

Amaranthus sp. Pigweed (infested field)


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Ambrosia_artemisiifolia_common_ragweed

Ambrosia artemisiifolia common ragweed (seedling)


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Ambrosia_artemisiifolia_common_ragweed

Ambrosia artemisiifolia common ragweed (infested field)


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American_black_nightshade_plant

American black nightshade plant (P. Westra, Colorado State University)


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Amutgrass_(Sporoblus_poiretii)

Amutgrass (Sporoblus poiretii)


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Aneilema_japonica

Aneilema japonica (FRW)


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Annual_bluegrass_(Poa_annua)

Annual bluegrass (Poa annua)


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Annual_fleabane_(Erigeron_annuus)

Annual fleabane (Erigeron annuus)


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Aster,_purple_(Machaeranthera_canescens)_1

Aster, purple (Machaeranthera canescens); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


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Aster,_purple_(Machaeranthera_canescens)_2

Aster, purple (Machaeranthera canescens); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


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Aster,_purple_(Machaeranthera_canescens)_3

Aster, purple (Machaeranthera canescens); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


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Asthma_weed_(Euphorbiaceae,_Euphorbia_hirta_L.)

Asthma weed (Euphorbiaceae, Euphorbia hirta L.)(FAW) )


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(Drawing)


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Barley,_foxtail_(Hordeum_jubatum)_adult

Barley, foxtail (Hordeum jubatum); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


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Barley,_foxtail_(Hordeum_jubatum)_flower

Barley, foxtail (Hordeum jubatum); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


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Barley,_mouse/wall

Barley, mouse; Barley, wall; Hordeum murinum L.; Mouse barley; Wall barley (FNE)


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Barnyard_grass_(Echinochloa_crus-galli)

Barnyard grass (Echinochloa crus-galli); flower (Turf) (Steven Dewey, Utah State University)


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Barnyard_grass_(Echinochloa_crus-galli)

Barnyard grass (Echinochloa crus-galli); seedling (Turf) (Steven Dewey, Utah State University)


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Barnyard_grass_(Echinochloa_crus-galli)

Barnyard grass (Echinochloa crus-galli); seedling (Turf) (Steven Dewey, Utah State University)


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Barnyard_grass_(Echinochloa_crus-galli)

Barnyard grass (Echinochloa crus-galli); adult (Turf) (Steven Dewey, Utah State University)


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Barnyard_grass_1

Abu-rukbah; Barnyard grass; Echinochloa colonum (L.)Link. (FNE)


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Barnyard_grass_2

Barnyard grass (H. F. Schwartz, Colorado State University)


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Barnyard_grass_3

Barnyard grass seeds (H. F. Schwartz, Colorado State University)


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Barnyard_grass_4

Barnyard grass (Lair, Colorado State University)


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Barnyard_grass_in_beans

Barnyard grass in beans (H. F. Schwartz, Colorado State University)


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Barnyard_grass_seedhead

Barnyard grass seedhead (Lair, Colorado State University)


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Barnyard_grass_seedling

Barnyard grass seedling (P. Westra, Colorado State University)


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Barnyardgrass_(Echinochloa_crus-galli)

Barnyardgrass (Echinochloa cru-sgalli)


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Barnyardgrass_+_onion

Barnyardgrass + onion (H. F. Schwartz, Colorado State University)


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Barnyardgrass_seedling,_medium_sized

Barnyardgrass seedling, medium sized (P. Westra, Colorado State University)


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Bedstraw,_rough

Bedstraw, rough; Dobbeyk; Edhairjeh; Galium tricorne Stokes.; Galium tricornutum Dandy; Rough bedstraw (FNE)


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Bee_Balm,_Monaida_fistulosa

Bee Balm, Monaida fistulosa (L. L. Berry, Colorado State University)


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Beggarweed_in_dry_beans

Beggarweed in dry beans (H. F. Schwartz, Colorado State University)


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Bermuda_grass/Star_grass

Bermuda grass; Cynodon dactylon (L.)Pers.; Najil; Razzin; Star grass; Theil (FNE)


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Bermudagrass_(Cynodon_dactylon)

Bermudagrass (Cynodon dactylon)


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Bermudagrass_*_(Cynodon_dactylon)

Bermudagrass * (Cynodon dactylon); adult (Turf) (Steven Dewey, Utah State University)


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Bermudagrass_*_(Cynodon_dactylon)

Bermudagrass * (Cynodon dactylon); [crabgrass - left; bermudagrass - right] florets (Turf) (Steven Dewey, Utah State University)


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Bermudagrass_*_(Cynodon_dactylon)

Bermudagrass * (Cynodon dactylon); leaf (Turf) (Steven Dewey, Utah State University)


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Bermudagrass_*_(Cynodon_dactylon)

Bermudagrass * (Cynodon dactylon); roots (Turf) (Steven Dewey, Utah State University)


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Big_bluestem

Big bluestem (Lair, Colorado State University)


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Big_bluestem_racemes

Big bluestem racemes (Lair, Colorado State University)


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Big_Sagebrush

Big Sagebrush (H. F. Schwartz, Colorado State University)


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bigroot_morningglory_(Ipomoea_pandurata)

bigroot morningglory (Ipomoea pandurata)


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Bindweed,_field

Bindweed, field; Convolvulus arvensis L.; Field bindweed (FNE)


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Bindweed,_field_*_(Convolvulus_arvensis)

Bindweed, field * (Convolvulus arvensis); seed, leaf (Turf) (Steven Dewey, Utah State University)


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Bindweed,_field_*_(Convolvulus_arvensis)

Bindweed, field * (Convolvulus arvensis); flowers (Turf) (Steven Dewey, Utah State University)


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Bindweed,_field_*_(Convolvulus_arvensis)

Bindweed, field * (Convolvulus arvensis); flowers (Turf) (Steven Dewey, Utah State University)


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Bindweed,_field_*_(Convolvulus_arvensis)

Bindweed, field * (Convolvulus arvensis); seedling (Turf) (Steven Dewey, Utah State University)


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Bindweed,_mallow-leaved

Bindweed, mallow-leaved; Convolvulus althaeoides L.; Convolvulus elegantissimus Miller; Convolvulus tenuissimus Sibth. &Sm. ; Mallow-leaved bindweed; Muddedeh (FNE)


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Bindweed,_shaggy

Bindweed, shaggy; Convolvulus betonicifolius Mill.; Convolvulus hirsutus Bieb.; Shaggy bindweed (FNE)


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Bindweed_+_onion

Bindweed + onion (H. F. Schwartz, Colorado State University)


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Bindweed_field

Bindweed field (L. L. Berry, Colorado State University)


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Bindweed_flower

Bindweed flower (L. L. Berry, Colorado State University)


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Bindweed_vine

Bindweed vine (L. L. Berry, Colorado State University)


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Bindweed_with_arrow-shaped_leaves

Bindweed with arrow-shaped leaves (L. L. Berry, Colorado State University)


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Birdsfoot_trefoil

Birdsfoot trefoil (H. F. Schwartz, Colorado State University)


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Bitter_sneezeweed(Helenium_amarum)

Bitter sneezeweed(Helenium amarum)


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Black_bindweed_(Polygonaceae,_Fallopia_convolvulus_L._A._Love)

Black bindweed (Polygonaceae Fallopia convolvulus (L.)A. Love)(FAW) )


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(Drawing)


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Black_medic,_Medicago_lupulina

Black medic adult, Medicago lupulina (Turf) (Steven Dewey, Utah State University)


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Black_medic,_Medicago_lupulina

Black medic flower, Medicago lupulina (Turf) (Steven Dewey, Utah State University)


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Black_nightshade

Black nightshade; Inab el Deeb; Solanum nigrum L. (FNE)


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Black_nightshade_(Sol_anaceae,_Solanum_nigrum_L.)

Black nightshade (Sol anaceae, Solanum nigrum L.)(FAW) )


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(Drawing)


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Black_nightshade_(Solanum_nigrum)

Black nightshade (Solanum nigrum)


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Black-awned_wheat

Black-awned wheat (H. F. Schwartz, Colorado State University)


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Blackberry_(Rubus_sp.)_

Blackberry (Rubus sp.)


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Blackjack_(Compositae,_Bidens_pilosa_L.)

Blackjack (Compositae, Bidens pilosa L.)(FAW) )


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(Drawing)


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Bladder_campion

Bladder campion; Campium, bladder; Silene cububalis Wibel.; Silene inflata Sm.; Silene latifolia (Miller)Britten & Rendle; Silene vulgaris (Moench.)Garcke. (FNE)


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Blessed_thistle_(Cnicus_benedictus)

Blessed thistle (Cnicus benedictus)


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Blue_couch/Couch_grass_(Gramineae,_Digitaria_abyssinica_A._Rich._Stapf)

Blue couch/Couch grass (Gramineae, Digitaria abyssinica (A. Rich.)Stapf (FAW) )


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(Drawing)


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Blue_grama

Blue grama (Lair, Colorado State University)


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Blue_grama_raceme

Blue grama raceme (Lair, Colorado State University)


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Blue_vervain_(Verbena_hastata)_

Blue vervain (Verbena hastata)


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Blue_woodruff

Asperula arvensis L.; Blue woodruff (FNE)


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Bluegrass,_annual_(Poa_annua)

Bluegrass, annual (Poa annua); adult (Turf) (Steven Dewey, Utah State University)


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Bluegrass,_bulbous_(Poa_bulbosa)

Bluegrass, bulbous (Poa bulbosa); adult (Dryland Crops) (Steven Dewey, Utah State University)


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Bluegrass,_bulbous_(Poa_bulbosa)

Bluegrass, bulbous (Poa bulbosa); adult (Dryland Crops) (Steven Dewey, Utah State University)


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Bluegrass,_bulbous_(Poa_bulbosa)

Bluegrass, bulbous (Poa bulbosa); flower (Dryland Crops) (Steven Dewey, Utah State University)


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Bluegrass,_bulbous_(Poa_bulbosa)

Bluegrass, bulbous (Poa bulbosa); flower (Dryland Crops) (Steven Dewey, Utah State University)


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Bouncing_Bet

Bouncing Bet (L. L. Berry, Colorado State University)


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Bouncing_Bet,_Saponaria_officinalis

Bouncing Bet, Saponaria officinalis (L. L. Berry, Colorado State University)


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Bracted_plantain_(Plantago_aristata)

Bracted plantain (Plantago aristata)


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Bristly_starbur_(Acanthospemum_hispidum)

Bristly starbur (Acanthospemum hispidum)


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Broadleaf_dock_(Rumex_obtusifolius)

Broadleaf dock (Rumex obtusifolius)


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Broadleaf_plantain_(Plantago_major)

Broadleaf plantain (Plantago major)


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Broadleaf_signalgrass_(Brachiaria_platyphylla)

Broadleaf signalgrass (Brachiaria platyphylla)


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Broadleaf_weed_in_onion

Broadleaf weed in onion (H. F. Schwartz, Colorado State University)


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Broadleaf_weed_in_pole_bean_field

Broadleaf weed in pole bean field (H. F. Schwartz, Colorado State University)


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Brome,_barren

Barren brome; Brome, barren; Bromus sterilis L. (FNE)


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Brome,_downy

Brome, downy; Bromus tectorum L.; Downy brome (FNE)


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Brome,_downy_(Bromus_tectorum)

Brome, downy (Bromus tectorum); adult (Dryland Crops) (Steven Dewey, Utah State University)


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Brome,_downy_(Bromus_tectorum)

Brome, downy (Bromus tectorum); flower (Dryland Crops) (Steven Dewey, Utah State University)


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Brome,_downy_(Bromus_tectorum)

Brome, downy (Bromus tectorum); ligule (Dryland Crops); (Steven Dewey, Utah State University)


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Brome,_downy_(Bromus_tectorum)

Brome, downy (Bromus tectorum); seedling (Dryland Crops) (Steven Dewey, Utah State University)


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Brome_grass_(Gramineae,_Bromus_pectinatus_Thunb.)

Brome grass (Gramineae, Bromus pectinatus Thunb.)(FAW) )


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(Drawing)


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Bromegrass_seeds

Bromegrass seeds (H. F. Schwartz, Colorado State University)


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Broomrape,_branched

Branched broomrape; Broomrape, branched; Orobanche rarnosa L.; Phelypaea ramosa (L.)C.A.Meyer (FNE)


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Broomrape,_drooping

Broomrape, drooping; Drooping broomrape; Orobanche cemua Loefl.; Orobanche cumana Wallr. (FNE)


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Broomrape,_Egyptian

Broomrape, Egyptian; Egyptian broomrape; Orobanche aegyptiaca Pers.; Phelypaea aegyptiaca (Pers.)Walpers. (FNE)


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Broomrape,_scalloped

Broomrape, scalloped; Orobanche crenata Forsk.; Orobanche speciosa DC.; Scalloped broomrape (FNE)


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Broomsedge_(Andropogon_virginicus)

Broomsedge (Andropogon virginicus)


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Buckhorn_plantain_(Plantago_lanceolata)

Buckhorn plantain (Plantago lanceolata)


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Buckhorn_plantain_seeds

Buckhorn plantain seeds (H. F. Schwartz, Colorado State University)


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Buckwheat,_wild_(Polygonum_convolvulus)

Buckwheat, wild (Polygonum convolvulus); flowers, leaves (Yard and Garden) (Steven Dewey, Utah State University)


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Buckwheat,_wild_(Polygonum_convolvulus)

Buckwheat, wild (Polygonum convolvulus); adult (Yard and Garden) (Steven Dewey, Utah State University)


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Buckwheat,_wild_(Polygonum_convolvulus)

Buckwheat, wild (Polygonum convolvulus); flower, leaf, seeds (Yard and Garden) (Steven Dewey, Utah State University)


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Buckwheat_plants

Buckwheat plants (G. Y. Frissoe, Colorado State University)


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Buckwheat_seedling

Buckwheat seedling (S. J. Nissen, Colorado State University)


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Buffalo_Bur

Buffalo Bur (H. F. Schwartz, Colorado State University)


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Buffalo_Bur

Buffalo Bur (L. L. Berry, Colorado State University)


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Buffalo_bur_,_Solanum_rostratum

Buffalo bur adult, Solanum rostratum (Pasture/Rangeland) (Steven Dewey, Utah State University)


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Buffalo_bur_,_Solanum_rostratum

Buffalo bur fruit, Solanum rostratum (Pasture/Rangeland) (Steven Dewey, Utah State University)


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Buffalo_bur_,_Solanum_rostratum

Buffalo bur flower and leaf, Solanum rostratum (Pasture/Rangeland) (Steven Dewey, Utah State University)


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Buffalo_bur_adult

Buffalo bur adult (G. Y. Frissoe, Colorado State University)


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Buffalo_bur_in_dry_beans

Buffalo bur in dry beans (H. F. Schwartz, Colorado State University)


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Buffalo_bur_in_dry_beans

Buffalo bur in dry beans (H. F. Schwartz, Colorado State University)


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Buffalo_bur_plant

Buffalo bur plant (P. Westra, Colorado State University)


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Buffalo_bur_plant_and_flower

Buffalo bur plant and flower (P. Westra, Colorado State University)


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Buffalo_bur_seed

Buffalo bur seed (L. L. Berry, Colorado State University)


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Buffalo_bur_seedling

Buffalo bur seedling (G. Y. Frissoe, Colorado State University)


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Buffalograss

Buffalograss (Lair, Colorado State University)


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Bull_Thistle

Bull Thistle (L. L. Berry, Colorado State University)


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Bull_Thistle_infestation_of_rangeland

Bull Thistle infestation of rangeland (L. L. Berry, Colorado State University)


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Bull_Thistle_leaf_and_spines

Bull Thistle leaf and spines (L. L. Berry, Colorado State University)


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Bull_Thistle_rosette

Bull Thistle rosette (L. L. Berry, Colorado State University)


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Bullwort/Common_bishops_weed

Bullwort/Common bishops weed, Ammi majus L. (FNE)


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Bur_buttercup,_Ranunculus_testiculatus

Bur buttercup adult and flower, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)


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Bur_buttercup,_Ranunculus_testiculatus

Bur buttercup adult and fruit, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)


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Bur_buttercup,_Ranunculus_testiculatus

Bur buttercup fruit, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)


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Bur_buttercup,_Ranunculus_testiculatus

Bur buttercup seedling, Ranunculus testiculatus (Dryland Crops) (Steven Dewey, Utah State University)


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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)


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Burcucumber(Sicyos_angulatus)

Burcucumber(Sicyos angulatus)


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Burdock,_Arctium_minus

Burdock adult, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)


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Burdock,_Arctium_minus

Burdock flower, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)


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Burdock,_Arctium_minus

Burdock fruit, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)


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Burdock,_Arctium_minus

Burdock seedling, Arctium minus (Wildland/Recreation) (Steven Dewey, Utah State University)


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Bushy_Knotweed

Bushy Knotweed (H. F. Schwartz, Colorado State University)


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Bushy_knotweed_plant

Bushy knotweed plant (G. Y. Frissoe, Colorado State University)


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Buttercup,_corn

Buttercup, corn; Corn buttercup; Ranunculus arvensis L.; Zaghalanta (FNE)


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buttercup_(Ranunculus_sp.)_

buttercup (Ranunculus sp.)


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butterfly_milkweed_(Asclepias_tuberosa)

butterfly milkweed (Asclepias tuberosa)


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Calyx_details_on_nightshade_berries

Calyx details on nightshade berries (P. Westra, Colorado State University)


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camphorweed_(Heterotheca_subaxillaris)

camphorweed (Heterotheca subaxillaris)


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Canada_Thistle

Canada Thistle (H. F. Schwartz, Colorado State University)


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Canada_thistle

Canada thistle (H. F. Schwartz, Colorado State University)


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Canada_thistle

Canada thistle (H. F. Schwartz, Colorado State University)


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Canada_thistle

Canada thistle (H. F. Schwartz, Colorado State University)


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Canada_thistle

Canada thistle (L. L. Berry, Colorado State University)


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Canada_Thistle,_early_flowering

Canada Thistle, early flowering (L. L. Berry, Colorado State University)


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Canada_Thistle,_mature_plant

Canada Thistle, mature plant (L. L. Berry, Colorado State University)


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Canada_thistle,_seeds

Canada thistle, seeds (H. F. Schwartz, Colorado State University)


tn_1225049.JPG 





Canada_thistle_adults

Canada thistle adults (G. Y. Frissoe, Colorado State University)


tn_1111049.JPG 





Canada_Thistle_bud_and_flower

Canada Thistle bud and flower (L. L. Berry, Colorado State University)


tn_0100013.JPG 





Canada_Thistle_early_bud

Canada Thistle early bud (K. G. Beck, Colorado State University)


tn_0502083.JPG 





Canada_Thistle_flowering

Canada Thistle flowering (K. G. Beck, Colorado State University)


tn_0502077.JPG 





Canada_thistle_in_growing_corn

Canada thistle in growing corn (P. Westra, Colorado State University)


tn_0746087.JPG 





Canada_Thistle_leaf,_spines_and_waxy_cuticle

Canada Thistle leaf, spines and waxy cuticle (K. G. Beck, Colorado State University)


tn_0502079.JPG 





Canada_Thistle_mid_to_late_bloom

Canada Thistle mid to late bloom (K. G. Beck, Colorado State University)


tn_0502082.JPG 





Canada_Thistle_post-bloom_seed_set

Canada Thistle post-bloom seed set (K. G. Beck, Colorado State University)


tn_0502080.JPG 





Canada_Thistle_rosette

Canada Thistle rosette (L. L. Berry, Colorado State University)


tn_0100010.JPG 





Canada_Thistle_seedling

Canada thistle seedling (P. Westra, Colorado State University)


tn_0746085.JPG 





Canada_Thistle_seedling

Canada Thistle seedling (G. Y. Frissoe, Colorado State University)


tn_1111048.JPG 





Canada_Thistle_treated_with_Pseudomonas

Canada Thistle treated with Pseudomonas (K. G. Beck, Colorado State University)


tn_0502081.JPG 





Canary_grass,_bristle-spiked/hood

Bristle- spiked canary grass; Canary grass, bristle-spiked; Canary grass, hood; Hood canary grass; Phalaris paradoxa L. (FNE)


tn_FAONE128.JPG 





Canary_grass,_lesser

Canary grass, lesser; 'Ain-al-qott; Lesser canary grass; Phalaris minor Retz.; Shaeer-al-faar (FNE)


tn_FAONE126.JPG 





Cape_sorrel

Cape sorrel; Oxalis cemua Thunb.; Oxalis pes-caprae L. (FNE)


tn_FAONE172.JPG 





Carolina_falsedanelion_(Pyrropappus_carolinianus)

Carolina falsedanelion (Pyrropappus carolinianus)


tn_USDAW034.JPG 





Carolina_geranium_(Geranium_carolinianum)

Carolina geranium (Geranium carolinianum)


tn_USDAW061.JPG 





Carpetweed_(Mullugo_verticillata)

Carpetweed (Mullugo verticillata)


tn_USDAW001.JPG 





Castor_bean

Castor bean (H. F. Schwartz, Colorado State University)


tn_1225050.JPG 





Catchfly,_conoid

Catchfly, conoid; Conoid catchfly; Silene conoidea L. (FNE)


tn_FAONE036.JPG 





Catnip,_Nepeta_cataria

Catnip adult, Nepeta cataria (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_03A.JPG 





Catnip,_Nepeta_cataria

Catnip leaf, Nepeta cataria (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_03L.JPG 





Cattail,_Typha_latifolia

Cattail adult, Typha latifolia (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_04A.JPG 





Cattail,_Typha_latifolia

Cattail flower and leaf, Typha latifolia (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_04FL.JPG 





Cattail,_Typha_latifolia

Cattail flower and leaf, Typha latifolia (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_04FL2.JPG 





Cattails

Cattails (H. F. Schwartz, Colorado State University)


tn_0045001.JPG 





Cattails

Cattails (H. F. Schwartz, Colorado State University)


tn_0045002.JPG 





Cheese-weed/Mallow

Cheese-weed; Mallow; Malva parviflora L. (FNE)


tn_FAONE158.JPG 





Chenopodiaceae,_Chenopodium_tourale_L.

Chenopodiaceae, Chenopodium tourale L. (FAW) )


tn_FAOW008A.JPG 

(Drawing)


tn_FAOW008D.JPG 





Chenopodium_album_common_lambsquarters

Chenopodium album common lambsquarters (seedling)


tn_SOY112.JPG 





Chenopodium_album_common_lambsquarters

Chenopodium album common lambsquarters (infected field)


tn_SOY113.JPG 





Chickweed,_common

Chickweed, common; Athen el far; Common chickweed; Stellaria media (L.)Vill. (FNE)


tn_FAONE040.JPG 





Chickweed,_common;_Stellaria_media

Chickweed, common; adult; Stellaria media (Turf) (Steven Dewey, Utah State University)


tn_L1_06A.JPG 





Chickweed,_common;_Stellaria_media

Chickweed, common; [common - left; mouse ear - right] flowers; Stellaria media (Turf) (Steven Dewey, Utah State University)


tn_L1_06F.JPG 





Chickweed,_common;_Stellaria_media

Chickweed, common; [common - left; mouse ear - right] flower, leaf; Stellaria media (Turf) (Steven Dewey, Utah State University)


tn_L1_06FL.JPG 





Chickweed,_mouseear;_Cerastium_vulgatum

Chickweed, mouseear; adult; Cerastium vulgatum (Turf) (Steven Dewey, Utah State University)


tn_L1_07A.JPG 





Chickweed,_mouseear;_Cerastium_vulgatum

Chickweed, mouseear; flower; Cerastium vulgatum (Turf) (Steven Dewey, Utah State University)


tn_L1_07F.JPG 





Chickweed_(Caryophyllaceae,_Stellaria_media_L._VIII.)

Chickweed (Caryophyllaceae, Stellaria media (L.)VIII.)(FAW) )


tn_FAOW007A.JPG 

(Drawing)


tn_FAOW007D.JPG 





Chickweed_(Stollaria_media)

Chickweed (Stollaria media)


tn_USDAW013.JPG 





Chicory,_Chichorium_intybus

Chicory, Chichorium intybus (L. L. Berry, Colorado State University)


tn_0094009.JPG 





Chicory,_Chichorium_intybus

Chicory, Chichorium intybus (L. L. Berry, Colorado State University)


tn_0094010.JPG 





Chicory,_Cichorium_intybus

Chicory adult, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_04A.JPG 





Chicory,_Cichorium_intybus

Chicory field, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_04X.JPG 





Chicory,_Cichorium_intybus

Chicory flower, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_04F.JPG 





Chicory,_Cichorium_intybus

Chicory seedling, Cichorium intybus (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_04S.JPG 





Chinese_lantern_(Sol_anaceae,_Nicandra_physalodes_Scop.)

Chinese lantern (Sol anaceae, Nicandra physalodes Scop.)(FAW) )


tn_FAOW058A.JPG 

(Drawing)


tn_FAOW058D.JPG 





Chk

Chk (Colorado State University)


tn_0746094.JPG 





Chk

Chk (Colorado State University)


tn_0746095.JPG 





Chromolaena_odorata

Chromolaena odorata (FAO_MTG)


tn_FAOM03B.JPG 





Clammy_groundcherry

Clammy groundcherry (G. Y. Frissoe, Colorado State University)


tn_1112064.JPG 





Clover

Clover (H. F. Schwartz, Colorado State University)


tn_3658031.JPG 





Clover,_white;_Trifolium_repens

Clover, white; adult; Trifolium repens (Turf) (Steven Dewey, Utah State University)


tn_L1_08A.JPG 





Cocklebur

Cocklebur; Shobbe't; Xanthium strumarium L. (FNE)


tn_FAONE064.JPG 





Cocklebur,_spiny

Cocklebur, spiny; Shobbeit; Spiny cocklebur; Xanthium spinosum L. (FNE)


tn_FAONE062.JPG 





Cocklebur,_Xanthium_strumarium

Cocklebur flower, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_05F.JPG 





Cocklebur,_Xanthium_strumarium

Cocklebur seedling, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_05S.JPG 





Cocklebur,_Xanthium_strumarium

Cocklebur stem, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_05T.JPG 





Cocklebur,_Xanthium_strumarium

Cocklebur adult, Xanthium strumarium (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_05X.JPG 





Cocklebur_in_beans

Cocklebur in beans (H. F. Schwartz, Colorado State University)


tn_0203052.JPG 





Columbine_Hybrid,_Aguilegia_sp.

Columbine Hybrid, Aguilegia sp. (L. L. Berry, Colorado State University)


tn_0094016.JPG 





Common_Cattail

Common Cattail (H. F. Schwartz, Colorado State University)


tn_4036045.JPG 





Common_Cocklebur

Common Cocklebur (H. F. Schwartz, Colorado State University)


tn_4036029.JPG 





Common_cocklebur_(Xanthium_pennyslvanicum)

common cocklebur (Xanthium pennyslvanicum)


tn_USDAW039.JPG 





Common_cocklebur_adult

Common cocklebur adult (G. Y. Frissoe, Colorado State University)


tn_1111051.JPG 





Common_cocklebur_flower

Common cocklebur flower (P. Westra, Colorado State University)


tn_0746083.JPG 





Common_cocklebur_seedling

Common cocklebur seedling (R. G. Wilson, Colorado State University)


tn_1111050.JPG 





Common_cocklebur_seedling_with_2-true_leaves

Common cocklebur seedling with 2-true leaves (P. Westra, Colorado State University)


tn_0746082.JPG 





common_greenbriar_(Smilax_rotundifolia)

common greenbriar (Smilax rotundifolia)


tn_USDAW088.JPG 





Common_Knotweed

Common Knotweed (H. F. Schwartz, Colorado State University)


tn_4036030.JPG 





Common_knotweed_plant

Common knotweed plant (G. Y. Frissoe, Colorado State University)


tn_1111057.JPG 





Common_Lambsquarter,_2-leaf_stage

Common Lambsquarter, 2-leaf stage (P. Westra, Colorado State University)


tn_0746009.JPG 





Common_Lambsquarters

Common Lambsquarters (H. F. Schwartz, Colorado State University)


tn_4036010.JPG 





common_lambsquarters_(Chenopodium_album)

common lambsquarters (Chenopodium album)


tn_USDAW014.JPG 





Common_Mallow

Common Mallow (H. F. Schwartz, Colorado State University)


tn_4036008.JPG 





Common_mallow

Common mallow (H. F. Schwartz, Colorado State University)


tn_1413100.JPG 





Common_mallow

Common mallow (P. Westra, Colorado State University)


tn_0746053.JPG 





Common_Mallow

Common mallow; Mallow, common; Malva sylvestris L. (FNE)


tn_FAONE160.JPG 





Common_mallow,_Malva_neglecta

Common mallow adult, Malva neglecta (Turf) (Steven Dewey, Utah State University)


tn_L1_11A.JPG 





Common_mallow,_Malva_neglecta

Common mallow leaf, Malva neglecta (Turf) (Steven Dewey, Utah State University)


tn_L1_11L.JPG 





Common_mallow,_Malva_neglecta

Common mallow leaf,seed,flower; Malva neglecta (Turf) (Steven Dewey, Utah State University)


tn_L1_11LDF.JPG 





Common_mallow,_Malva_neglecta

Common mallow seedling, Malva neglecta (Turf) (Steven Dewey, Utah State University)


tn_L1_11S.JPG 





Common_mallow_+_onion

Common mallow + onion (H. F. Schwartz, Colorado State University)


tn_3658002.JPG 





Common_mallow_+_onion

Common mallow + onion (H. F. Schwartz, Colorado State University)


tn_3658003.JPG 





Common_mallow_plant_and_flower

Common mallow plant and flower (G. Y. Frissoe, Colorado State University)


tn_1112067.JPG 





Common_mallow_seedling

Common mallow seedling (G. Y. Frissoe, Colorado State University)


tn_1111062.JPG 





Common_Milkweed

Common Milkweed (H. F. Schwartz, Colorado State University)


tn_4036006.JPG 





Common_milkweed

Common milkweed (H. F. Schwartz, Colorado State University)


tn_3658030.JPG 





Common_milkweed_plant

Common milkweed plant (P. Westra, Colorado State University)


tn_0746093.JPG 





Common_Morningglory

Common Morningglory (H. F. Schwartz, Colorado State University)


tn_4036003.JPG 





Common_mullein,_Verbascum_thapsus

Common mullein adult, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_08A.JPG 





Common_mullein,_Verbascum_thapsus

Common mullein leaf, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_08L.JPG 





Common_mullein,_Verbascum_thapsus

Common mullein seedling, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_08S.JPG 





Common_mullein,_Verbascum_thapsus

Common mullein flower, Verbascum thapsus (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_08F.JPG 





common_mullein_(Verbascum_thapsus)

common mullein (Verbascum thapsus)


tn_USDAW111.JPG 





common_purselane_(Portulaca_oleracea)

common purselane (Portulaca oleracea)


tn_USDAW105.JPG 





Common_Purslane

Common Purslane (H. F. Schwartz, Colorado State University)


tn_4036002.JPG 





Common_purslane

Common purslane (M. E. Bartolo, Colorado State University)


tn_2687033.JPG 





Common_purslane

Common purslane (M. E. Bartolo, Colorado State University)


tn_2687034.JPG 





Common_purslane

Common purslane (Mark VanGessel, Colorado State University)


tn_0069001.JPG 





Common_purslane_plant_in_flower

Common purslane plant in flower (P. Westra, Colorado State University)


tn_0746079.JPG 





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)


tn_0746076.JPG 





Common_purslane_seedling

Common purslane seedling (P. Westra, Colorado State University)


tn_0746077.JPG 





common_ragweed_(Ambrosia_artemisiifolia)

common ragweed (Ambrosia artemisiifolia)


tn_USDAW018.JPG 





Common_sunflower,_cotyledons_visible

Common sunflower, cotyledons visible (P. Westra, Colorado State University)


tn_0746029.JPG 





Common_sunflower_plant

Common sunflower plant (P. Westra, Colorado State University)


tn_0746031.JPG 





Common_sunflower_plants

Common sunflower plants (H. F. Schwartz, Colorado State University)


tn_1111078.JPG 





Common_sunflower_seedling

Common sunflower seedling (G. Y. Frissoe, Colorado State University)


tn_1111077.JPG 





Common_sunflower_seedling

Common sunflower seedling (P. Westra, Colorado State University)


tn_0746030.JPG 





Common_Waterhemp

Common Waterhemp (H. F. Schwartz, Colorado State University)


tn_4036026.JPG 





Common_waterhemp_plant

Common waterhemp plant (G. Y. Frissoe, Colorado State University)


tn_1112061.JPG 





Common_yarrow_(Achillea_millefolum)

Common yarrow (Achillea millefolum)


tn_USDAW017.JPG 





Common_yellow_woodsorrel_(Oxalis_stricta)

Common yellow woodsorrel (Oxalis stricta)


tn_USDAW092.JPG 





Compositae,_Gutenbergia_cordifolia_Benth._ex_Oliv.

Compositae, Gutenbergia cordifolia Benth. ex Oliv. (FAW) )


tn_FAOW015A.JPG 

(Drawing)


tn_FAOW015D.JPG 





Compositae,_Sphaeranthus_bullatus_Mattf.

Compositae, Sphaeranthus bullatus Mattf. (FAW) )


tn_FAOW019A.JPG 

(Drawing)


tn_FAOW019D.JPG 





Convolvulus_arvensis

Convolvulus arvensis (FAO_MTG)


tn_FAOM03C.JPG 





Corn_cockle_(Agrostemma_githago)

Corn cockle (Agrostemma githago)


tn_USDAW010.JPG 





Cornflower_(Centaurea_cyanus)

Cornflower (Centaurea cyanus)


tn_USDAW023.JPG 





Crabgrass

Crabgrass; Dafeerah; Digitaria sanguinalis (L.)Scop. (FNE)


tn_FAONE116.JPG 





Crabgrass,_Digitaria_sanguinalis

Crabgrass adult, Digitaria sanguinalis (Turf) (Steven Dewey, Utah State University)


tn_L1_09A.JPG 





Crabgrass,_Digitaria_sanguinalis

Crabgrass flower, Digitaria sanguinalis (Turf) (Steven Dewey, Utah State University)


tn_L1_09F.JPG 





Crabgrass,_Digitaria_sanguinalis

Crabgrass in Kentucky bluegrass, Digitaria sanguinalis (Turf) (Steven Dewey, Utah State University)


tn_L1_09X.JPG 





Cranes-bill

Cranes-bill; Geranium tuberosum L. (FNE)


tn_FAONE106.JPG 





Crazyweed,_Oxytropis_lambertii

Crazyweed, Oxytropis lambertii (L. L. Berry, Colorado State University)


tn_0094034.JPG 





Cress,_hoary;_Cardaria_draba

Cress, hoary; adult; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_05A.JPG 





Cress,_hoary;_Cardaria_draba

Cress, hoary; flower; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_05F.JPG 





Cress,_hoary;_Cardaria_draba

Cress, hoary; leaf; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_05L.JPG 





Cress,_hoary;_Cardaria_draba

Cress, hoary; roots; Cardaria draba (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_05R.JPG 





Crested_wheatgrass

Crested wheatgrass (H. F. Schwartz, Colorado State University)


tn_1225071.JPG 





Crested_wheatgrass

Crested wheatgrass (H. F. Schwartz, Colorado State University)


tn_2223007.JPG 





Crested_wheatgrass

Crested wheatgrass (H. F. Schwartz, Colorado State University)


tn_2223008.JPG 





Crested_wheatgrass

Crested wheatgrass (R. F. Jepson, Colorado State University)


tn_4031004.JPG 





Croton

Croton; Chrozophora tinctoria (L.)A.Juss.; Ghobbeira; Hadak; Neela (FNE)


tn_FAONE098.JPG 





Crowfootgrass_(Dactyloctenium_aegyptium)

Crowfootgrass (Dactyloctenium aegyptium)


tn_USDAW065.JPG 





Crows-foot_grass_(Gramineae,_Dactyloctenium_aegyptium_L._Willd.)

Crows-foot grass (Gramineae, Dactyloctenium aegyptium (L.)Willd.)(FAW) )


tn_FAOW034A.JPG 

(Drawing)


tn_FAOW034D.JPG 





Cruciferae,_Erucastrum_arabicum_Fisch._&_Mey.

Cruciferae, Erucastrum arabicum Fisch. & Mey. (FAW) )


tn_FAOW022A.JPG 

(Drawing)


tn_FAOW022D.JPG 





Cudweed_(Gnaphalium_sp.)

Cudweed (Gnaphalium sp.)


tn_USDAW030.JPG 





Curled_dock_seeds

Curled dock seeds (H. F. Schwartz, Colorado State University)


tn_1225051.JPG 





Curly_dock_(Rumex_crispus)

Curly dock (Rumex crispus)


tn_USDAW102.JPG 





Curse_of_India/Lantana_(Verbenaceae,_Lantana_camara_L.)

Curse of India/Lantana (Verbenaceae, Lantana camara L.)(FAW) )


tn_FAOW062A.JPG 

(Drawing)


tn_FAOW062D.JPG 





Cuscuta_campestris

Cuscuta campestris (FAO_MTG)


tn_FAOM06C.JPG 





Cuscuta_japonica_flowering

Cuscuta japonica flowering (FAO_MTG)


tn_FAOM06B.JPG 





Cuscuta_japonica_vegetative_shoots

Cuscuta japonica vegetative shoots (FAO_MTG)


tn_FAOM06A.JPG 





Cuscuta_sp._Dodder

Cuscuta sp. Dodder (infested plant in China)


tn_SOY120.JPG 





Ccutleaf_eveningprimrose_(Oenothera_laciniata)

Cutleaf eveningprimrose (Oenothera laciniata)


tn_USDAW090.JPG 





Cutleaf_nightshade_plant

Cutleaf nightshade plant (P. Westra, Colorado State University)


tn_0746064.JPG 





Cyperaceae,_Cyperus_teneristolon_Mattf._&_Kuk.

Cyperaceae, Cyperus teneristolon Mattf. & Kuk.(FAW)


tn_FAOW028A.JPG 

(Drawing)


tn_FAOW028D.JPG 





Cyperus_difformis

Cyperus difformis (FRW)


tn_R07.JPG 





Cyperus_esculentus_yellow_nutsedge

Cyperus esculentus yellow nutsedge (seedling)


tn_SOY109.JPG 





Cyperus_esculentus_yellow_nutsedge

Cyperus esculentus yellow nutsedge (infested field)


tn_SOY110.JPG 





Cyperus_iria

Cyperus iria (FRW)


tn_R06.JPG 





Cyperus_rotundus

Cyperus rotundus (FRW)


tn_R11.JPG 





Cyperus_serotinus

Cyperus serotinus (FRW)


tn_R18.JPG 





Cypressvine_morningglory_(Ipomoea_quamoclit)

Cypressvine morningglory (Ipomoea quamoclit)


tn_USDAW045.JPG 





Daisy,_crown

Daisy, crown; Chrysanthemum coronarium L. ; Crown daisy; Qhewan (FNE)


tn_FAONE054.JPG 





Dalmation_Toadflax

Dalmation Toadflax (H. F. Schwartz, Colorado State University)


tn_4036043.JPG 





Dalmation_Toadflax

Dalmation Toadflax (L. L. Berry, Colorado State University)


tn_0100043.JPG 





Dalmation_Toadflax

Dalmation Toadflax (L. L. Berry, Colorado State University)


tn_0100044.JPG 





Dalmation_Toadflax,_Linaria_genistifolia

Dalmation Toadflax, Linaria genistifolia (L. L. Berry, Colorado State University)


tn_0094024.JPG 





Dalmation_Toadflax_flower

Dalmation Toadflax flower (K. G. Beck, Colorado State University)


tn_0502089.JPG 





Dalmation_Toadflax_habitat

Dalmation Toadflax habitat (K. G. Beck, Colorado State University)


tn_0502087.JPG 





Dalmation_Toadflax_leaf_shape

Dalmation Toadflax leaf shape (K. G. Beck, Colorado State University)


tn_0502088.JPG 





Dalmation_Toadflax_leaves_and_flowers

Dalmation Toadflax leaves and flowers (L. L. Berry, Colorado State University)


tn_0100046.JPG 





Dalmation_Toadflax_vegetative_regrowth_in_spring

Dalmation Toadflax vegetative regrowth in spring (K. G. Beck, Colorado State University)


tn_0502090.JPG 





Dalmation_Toadflax_with_sworled_leaves

Dalmation Toadflax with sworled leaves (L. L. Berry, Colorado State University)


tn_0100045.JPG 





Dame's_Rocket,_Hesperis_matroualis

Dame's Rocket, Hesperis matroualis (L. L. Berry, Colorado State University)


tn_0094011.JPG 





Dame's_Rocket_(Boulder_County)

Dame's Rocket (Boulder County) (L. L. Berry, Colorado State University)


tn_0094030.JPG 





Dandelion

Dandelion (H. F. Schwartz, Colorado State University)


tn_4036035.JPG 





Dandelion,_Taraxacum_officinale

Dandelion adult, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)


tn_L1_10A1.JPG 





Dandelion,_Taraxacum_officinale

Dandelion flower, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)


tn_L1_10F.JPG 





Dandelion,_Taraxacum_officinale

Dandelion flower, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)


tn_L1_10F2.JPG 





Dandelion,_Taraxacum_officinale

Dandelion field, Taraxacum officinale (Turf) (Steven Dewey, Utah State University)


tn_L1_10X.JPG 





dandelion_(Taraxacum_officinale)

dandelion (Taraxacum officinale)


tn_USDAW038.JPG 





Dandelion_in_beans

Dandelion in beans (H. F. Schwartz, Colorado State University)


tn_0203051.JPG 





Dandelion_in_onion

Dandelion in onion (H. F. Schwartz, Colorado State University)


tn_1413094.JPG 





Dandelions

Dandelions (H. F. Schwartz, Colorado State University)


tn_1413001.JPG 





Datura_stramonium_jimsonweed

Datura stramonium jimsonweed (seedling)


tn_SOY121.JPG 





Dature_meteloides

Dature meteloides (fully grown plant)


tn_SOY122.JPG 





dayflower_(Commelina_communis)

dayflower (Commelina communis)


tn_USDAW015.JPG 





Delea_clover_seeds

Delea clover seeds (H. F. Schwartz, Colorado State University)


tn_1224002.JPG 





Devil's_Claw

Devil's Claw (H. F. Schwartz, Colorado State University)


tn_4036020.JPG 





Devil's_claw

Devil's claw (H. F. Schwartz, Colorado State University)


tn_0203044.JPG 





Devil's_claw_flower

Devil's claw flower (H. F. Schwartz, Colorado State University)


tn_0203045.JPG 





Devil's_claw_flower

Devil's claw flower (H. F. Schwartz, Colorado State University)


tn_0203046.JPG 





Devil's_thorn_(Polygonaceae,_Emex_australis_Steinh.)

Devil's thorn (Polygonaceae, Emex australis Steinh.)(FAW) )


tn_FAOW049A.JPG 

(Drawing)


tn_FAOW049D.JPG 





Dichondra_(Dichondra_repens)

Dichondra (Dichondra repens)


tn_USDAW040.JPG 





Diffuse_Knapweed

Diffuse Knapweed (H. F. Schwartz, Colorado State University)


tn_4036042.JPG 





Diffuse_Knapweed_flower

Diffuse Knapweed flower (L. L. Berry, Colorado State University)


tn_0094063.JPG 





Diffuse_Knapweed_flowering

Diffuse Knapweed flowering (K. G. Beck, Colorado State University)


tn_0502096.JPG 





Diffuse_Knapweed_rosette

Diffuse Knapweed rosette (L. L. Berry, Colorado State University)


tn_0100034.JPG 





Diffuse_Knapweed_rosette

Diffuse Knapweed rosette (K. G. Beck, Colorado State University)


tn_0502095.JPG 





Diffuse_Knapweed_seed_head_with_spines

Diffuse Knapweed seed head with spines (L. L. Berry, Colorado State University)


tn_0100035.JPG 





Diffuse_Knapweed_seed_heads_and_buds

Diffuse Knapweed seed heads and buds (L. L. Berry, Colorado State University)


tn_0100036.JPG 





Dock,_curly

Curly dock; Dock, curly; Rumex crispus L. (FNE)


tn_FAONE186.JPG 





Dock,_curly;_Rumex_crispus

Dock, curly; adult; Rumex crispus (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_04A.JPG 





Dock,_curly;_Rumex_crispus

Dock, curly; adult; Rumex crispus (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_04A2.JPG 





Dodder

Dodder; Cuscuta arvensis; Cuscuta basarabica Buia.; Cuscuta carnpestris Yuncker; (FNE)


tn_FAONE072.JPG 





Dodder,_Cuscuta_spp.

Dodder adult, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_01A.JPG 





Dodder,_Cuscuta_spp.

Dodder adult, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_01X.JPG 





Dodder,_Cuscuta_spp.

Dodder flower, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_01X2.JPG 





Dodder,_Cuscuta_spp.

Dodder leaf, Cuscuta spp. (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_01L.JPG 





Dodder,_eastern

Dodder, eastern; Cuscuta monogyna Vahl. (FNE)


tn_FAONE074.JPG 





Dodder_(Cuscuta_sp.)_

Dodder (Cuscuta sp.)


tn_USDAW042.JPG 





Dodder_(on_bindweed)_in_orchard

Dodder (on bindweed)in orchard (H. J. Larsen, Colorado State University)


tn_2013050.JPG 





Dodder_plants_on_weed

Dodder plants on weed (H. F. Schwartz, Colorado State University)


tn_1046024.JPG 





Dodder_seeds

Dodder seeds (H. F. Schwartz, Colorado State University)


tn_1225052.JPG 





Dogfennel_(Eupatorium_capillifolium)

Dogfennel (Eupatorium capillifolium)


tn_USDAW028.JPG 





Donkeytail_Spurge,_Euphorbia_myrsinites

Donkeytail Spurge, Euphorbia myrsinites (L. L. Berry, Colorado State University)


tn_0094018.JPG 





Dotted_Gayfeather,_Liatris_punctata

Dotted Gayfeather, Liatris punctata (L. L. Berry, Colorado State University)


tn_0094015.JPG 





Double_thorn_(Polygonaceae,_Oxygonum_sinuatum_Meisn._Dammer)

Double thorn (Polygonaceae Oxygonum sinuatum (Meisn.)Dammer)(FAW) )


tn_FAOW051A.JPG 

(Drawing)


tn_FAOW051D.JPG 





Downey_brome_(cheat_grass),_Bromus_tectorum

Downey brome (cheat grass), Bromus tectorum (H. F. Schwartz, Colorado State University)


tn_2223051.JPG 





Downey_brome_(cheat_grass),_Bromus_tectorum

Downey brome (cheat grass), Bromus tectorum (H. F. Schwartz, Colorado State University)


tn_2223052.JPG 





Downey_brome_(cheat_grass),_Bromus_tectorum

Downey brome (cheat grass), Bromus tectorum (H. F. Schwartz, Colorado State University)


tn_2223050.JPG 





Downy_Brome

Downy Brome (H. F. Schwartz, Colorado State University)


tn_4036057.JPG 





Downy_Brome

Downy Brome (L. L. Berry, Colorado State University)


tn_0100099.JPG 





Downy_brome,_Bromus tectorum

Downy brome, Bromus tectorum (P. Westra, Colorado State University)


tn_0104033.JPG 





Downy_brome,_Bromus_tectorum

Downy brome, Bromus tectorum (Lair, Colorado State University)


tn_4031057.JPG 





Downy_brome,_Bromus_tectorum

Downy brome, Bromus tectorum (P. Westra, Colorado State University)


tn_0104032.JPG 





Downy_brome_in_wheat

Downy brome in wheat (P. Westra, Colorado State University)


tn_0104031.JPG 





Downy_brome_panicle

Downy brome panicle (Lair, Colorado State University)


tn_4031056.JPG 





Downy_brome_seeds

Downy brome seeds (H. F. Schwartz, Colorado State University)


tn_1225046.JPG 





Dwarf_marigold_(Compositae,_Schkuhria_pinnata_Lam._Thell.)

Dwarf marigold (Compositae, Schkuhria pinnata (Lam.)Thell.)(FAW) )


tn_FAOW017A.JPG 

(Drawing)


tn_FAOW017D.JPG 





Eastern_black_(left)_&_hairy_(right)_nightshade_berries

Eastern black (left)& hairy (right)nightshade berries (P. Westra, Colorado State University)


tn_0746067.JPG 





Eastern_black_nightshade_berries

Eastern black nightshade berries (P. Westra, Colorado State University)


tn_0746070.JPG 





Eastern_black_nightshade_berries

Eastern black nightshade berries (G. Y. Frissoe, Colorado State University)


tn_1111066.JPG 





Eastern_black_nightshade_plant

Eastern black nightshade plant (G. Y. Frissoe, Colorado State University)


tn_1111065.JPG 





Eastern_bracken_(Pteridium_aquilinum)

Eastern bracken (Pteridium aquilinum)


tn_USDAW104.JPG 





Echinochloa_crus-galli

Echinochloa crus-galli (FAO_MTG)


tn_FAOM02A.JPG 





Echinochloa_crus-galli

Echinochloa crus-galli (FRW)


tn_R01.JPG 





Echinochloa_oryzicola

Echinochloa oryzicola (FRW)


tn_R13.JPG 





Eichhornia_crassipes

Eichhornia crassipes (FAO_MTG)


tn_FAOM05A.JPG 





Eleocharis_kuroguwai

Eleocharis kuroguwai (FRW)


tn_R15.JPG 





Euphorbia_heterophylla

Euphorbia heterophylla (FAO_MTG)


tn_FAOM03D.JPG 





European_heliotrope

European heliotrope; Agrabanah; Heliotropium europaeum L. (FNE)


tn_FAONE034.JPG 





False_star_grass_(Gramineae,_Chloris_pycnothrix_Trin.)

False star grass (Gramineae, Chloris pycnothrix Trin.)(FAW) )


tn_FAOW032A.JPG 

(Drawing)


tn_FAOW032D.JPG 





Field_Bindweed

Field Bindweed (H. F. Schwartz, Colorado State University)


tn_4036027.JPG 





Field_bindweed,_pink-flowered

Field bindweed, pink flowered (P. Westra, Colorado State University)


tn_0746091.JPG 





field_bindweed_(Convolvulus_arvensis)

field bindweed (Convolvulus arvensis)


tn_USDAW041.JPG 





Field_bindweed_+_onion

Field bindweed + onion (H. F. Schwartz, Colorado State University)


tn_3658006.JPG 





Field_bindweed_flowers

Field bindweed flowers (H. F. Schwartz, Colorado State University)


tn_2223012.JPG 





Field_bindweed_in_dry_beans

Field bindweed in dry beans (H. F. Schwartz, Colorado State University)


tn_0916026.JPG 





Field_bindweed_plants_and_flowers

Field bindweed plants and flowers (H. F. Schwartz, Colorado State University)


tn_1111052.JPG 





Field_bindweed_seed_capsules

Field bindweed seed capsules (P. Westra, Colorado State University)


tn_0746092.JPG 





Field_bindweed_seedling_growing_from_seed

Field bindweed seedling growing from seed (P. Westra, Colorado State University)


tn_0746088.JPG 





Field_bindweed_seeds

Field bindweed seeds (H. F. Schwartz, Colorado State University)


tn_1225053.JPG 





Field_bindweed_shoot_from_underground_rootstock

Field bindweed shoot from underground rootstock (P. Westra, Colorado State University)


tn_0746089.JPG 





Field_dandbur_(Panicum_pauciflorus)

Field dandbur (Panicum pauciflorus)


tn_USDAW070.JPG 





Field_Dodder

Field Dodder (H. F. Schwartz, Colorado State University)


tn_4036001.JPG 





Field_Marigold

' Field marigold; Calendula arvensis L.; Marigold, field (FNE)


tn_FAONE050.JPG 





Field_Pennycress

Field Pennycress (H. F. Schwartz, Colorado State University)


tn_4036022.JPG 





Field_Sandbur

Field Sandbur (H. F. Schwartz, Colorado State University)


tn_4036047.JPG 





Field_Sandbur

Field Sandbur (L. L. Berry, Colorado State University)


tn_0100079.JPG 





Filaree,_redstem;_Erodium_cicutarium

Filaree, redstem; adult; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_03A.JPG 





Filaree,_redstem;_Erodium_cicutarium

Filaree, redstem; flower; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_03F.JPG 





Filaree,_redstem;_Erodium_cicutarium

Filaree, redstem; flower; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_03F2.JPG 





Filaree,_redstem;_Erodium_cicutarium

Filaree, redstem; seedling and flower; Erodium cicutarium (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_03SF.JPG 





Fimbristylis_littoralis

Fimbristylis littoralis (FRW)


tn_R05.JPG 





Fleabane,_hairy

' Hairy fleabane; Conyza ambigua DC.; Conyza bonariensis (L.)Cronq.; Eddubban; Erigeron bonariensis L.; Erigeron crispus Pourret; Fleabane, hairy; Nashash (FNE)


tn_FAONE056.JPG 





Fleabane_(Compositae,_Conyza_bonariensis_L._Cronq.)

Fleabane (Compositae, Conyza bonariensis (L.)Cronq.)(FAW) )


tn_FAOW013A.JPG 

(Drawing)


tn_FAOW013D.JPG 





Flordia_beggarweed_(Desmondium_tortuosum)

Flordia beggarweed (Desmondium tortuosum)


tn_USDAW083.JPG 





Flordia_beony_(Stachys_floridana)

Flordia beony (Stachys floridana)


tn_USDAW079.JPG 





Flordia_purslane_-_pusley_(Richardia_scabra)

Flordia purslane - pusley (Richardia scabra)


tn_USDAW109.JPG 





Flowering_cabbage_in_carrot

Flowering cabbage in carrot (H. F. Schwartz, Colorado State University)


tn_1413096.JPG 





Foxtail,_bristly

Bristly foxtail; Foxtail, bristly; Kamh el far; Setaria verticillata (L.)Beauv. (FNE)


tn_FAONE130.JPG 





Foxtail,_bristly;_Setaria_verticillata

Foxtail, bristly; adult; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_02A.JPG 





Foxtail,_bristly;_Setaria_verticillata

Foxtail, bristly; flower; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_02F.JPG 





Foxtail,_bristly;_Setaria_verticillata

Foxtail, bristly; flower; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_02F2.JPG 





Foxtail,_bristly;_Setaria_verticillata

Foxtail, bristly; ligule; Setaria verticillata (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_02G.JPG 





Foxtail,_green

Foxtail, green (H. F. Schwartz, Colorado State University)


tn_3658022.JPG 





Foxtail,_green

Foxtail, green (H. F. Schwartz, Colorado State University)


tn_3658023.JPG 





Foxtail,_green;_in_dry_beans

Foxtail, green; in dry beans (H. F. Schwartz, Colorado State University)


tn_2219056.JPG 





Foxtail,_green;_seeds

Foxtail, green; seeds (H. F. Schwartz, Colorado State University)


tn_1225054.JPG 





Foxtail,_green;_Setaria_viridis

Foxtail, green; adult; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_03A.JPG 





Foxtail,_green;_Setaria_viridis

Foxtail, green; adult; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_03A2.JPG 





Foxtail,_green;_Setaria_viridis

Foxtail, green; flower; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_03F.JPG 





Foxtail,_green;_Setaria_viridis

Foxtail, green; flower; Setaria viridis (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_03F2.JPG 





Foxtail,_yellow;_Setaria_glauca

Foxtail, yellow; flower; Setaria glauca (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_04F.JPG 





Foxtail_&_other_grasses_in_dry_beans

Foxtail & other grasses in dry beans (H. F. Schwartz, Colorado State University)


tn_2219055.JPG 





Foxtail_(Setaria_sp.)_

Foxtail (Setaria sp.)


tn_USDAW075.JPG 





Foxtail_+_onion

Foxtail + onion (H. F. Schwartz, Colorado State University)


tn_3658011.JPG 





Foxtail_and_sandbur_complex_in_corn

Foxtail and sandbur complex in corn (P. Westra, Colorado State University)


tn_0104005.JPG 





Foxtail_Barley

Foxtail Barley (H. F. Schwartz, Colorado State University)


tn_4036054.JPG 





Foxtail_barley

Foxtail barley (H. F. Schwartz, Colorado State University)


tn_2223011.JPG 





Foxtail_infestation_in_corn

Foxtail infestation in corn (P. Westra, Colorado State University)


tn_0104004.JPG 





Foxtail_millet

Foxtail millet (M. A. Brick, Colorado State University)


tn_1112083.JPG 





Foxtail_millet

Foxtail millet (M. A. Brick, Colorado State University)


tn_1112084.JPG 





Foxtails

Foxtails (H. F. Schwartz, Colorado State University)


tn_4036056.JPG 





Fumitory,_common

Common fumitory; Fumaria officinalis L.; Fumitory, common (FNE)


tn_FAONE174.JPG 





Fumitory,_small_white

Fumitory, small white; Fumaria caespitosa Loscos.; Fumaria parviflora Lam.; Omeyyal; Small white fumitory (FNE)


tn_FAONE176.JPG 





Galerucella_spp.

Galerucella spp. (L. L. Berry, Colorado State University)


tn_0094087.JPG 





Giant_Mullen_and_seed_stalk

Giant Mullen and seed stalk (L. L. Berry, Colorado State University)


tn_0100062.JPG 





Giant_Mullen_rosette

Giant Mullen rosette (L. L. Berry, Colorado State University)


tn_0100063.JPG 





Giant_Mullen_seed_head_and_flowers

Giant Mullen seed head and flowers (L. L. Berry, Colorado State University)


tn_0100064.JPG 





Giant_Ragweed

Giant Ragweed (H. F. Schwartz, Colorado State University)


tn_4036037.JPG 





giant_ragweed_(Ambrosia_trifida)

giant ragweed (Ambrosia trifida)


tn_USDAW019.JPG 





Giant_ragweed_plant

Giant ragweed plant (H. F. Schwartz, Colorado State University)


tn_1413051.JPG 





Goat_weed_(Compositae,_Ageratum_conyzoides_L.)

Goat weed (Compositae, Ageratum conyzoides L.)(FAW) )


tn_FAOW011A.JPG 

(Drawing)


tn_FAOW011D.JPG 





Goatgrass,_jointed;_Aegilops_cylindrica

Goatgrass, jointed; adult; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_06A.JPG 





Goatgrass,_jointed;_Aegilops_cylindrica

Goatgrass, jointed; flower; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_06F.JPG 





Goatgrass,_jointed;_Aegilops_cylindrica

Goatgrass, jointed; ligule; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_06G.JPG 





Goatgrass,_jointed;_Aegilops_cylindrica

Goatgrass, jointed; seedling; Aegilops cylindrica (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_06S.JPG 





Goatsrue,_Galega_officinalis

Goatsrue adult, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_05A.JPG 





Goatsrue,_Galega_officinalis

Goatsrue flower, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_05F.JPG 





Goatsrue,_Galega_officinalis

Goatsrue fruit, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_05F2.JPG 





Goatsrue,_Galega_officinalis

Goatsrue flower and leaf, Galega officinalis (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_05FL.JPG 





Golden_Banner,_Thermopsis_divaricarpa

Golden Banner, Thermopsis divaricarpa (L. L. Berry, Colorado State University)


tn_0094002.JPG 





Goldenod_(Solidago_sp.)_

Goldenod (Solidago sp.)


tn_USDAW036.JPG 





Goosefoot,_common

Common goosefoot; Chenopodium album L.; E'tra; Fat-hen; Fiss elkilab; Goosefoot, common (FNE)


tn_FAONE044.JPG 





Goosefoot,_nettle-leaved

Goosefoot, nettle-leaved; Chenopodium murale L.; Nettle-leaved goosefoot; Ramram (FNE)


tn_FAONE046.JPG 





Goosegrass

Goosegrass; Cleavers; Galium aparine L.(FNE)


tn_FAONE198.JPG 





Goosegrass/Cleavers_(Rubiaceae,_Galium_spurium_L._ssp._africanum_Verdc.)

Goosegrass/Cleavers (Rubiaceae, Galium spurium L. ssp. africanum Verdc.)(FAW) )


tn_FAOW054A.JPG 

(Drawing)


tn_FAOW054D.JPG 





goosegrass_(Eleusine_indica)

goosegrass (Eleusine indica)


tn_USDAW068.JPG 





Gramineae,_Digitaria_velutina_(Forssk.)_P._Beauv.

Gramineae, Digitaria velutina (Forssk.)P. Beauv. (FAW) )


tn_FAOW036A.JPG 

(Drawing)


tn_FAOW036D.JPG 





Gramineae,_Eragrostis_tenuifolia_(A._Rich.)_Steud.

Gramineae, Eragrostis tenuifolia (A. Rich.)Steud. (FAW) )


tn_FAOW038A.JPG 

(Drawing)


tn_FAOW038D.JPG 





Gramineae,_Setaria_pumila_Poir._Roem_&_Schult.

Gramineae, Setaria pumila (Poir.)Roem & Schult. (FAW) )


tn_FAOW043A.JPG 

(Drawing)


tn_FAOW043D.JPG 





Great_Plains_Yucca

Great Plains Yucca (H. F. Schwartz, Colorado State University)


tn_4036023.JPG 





Green_foxtail_in_corn

Green foxtail in corn (P. Westra, Colorado State University)


tn_0104003.JPG 





Green_foxtail_in_corn

Green foxtail in corn (P. Westra, Colorado State University)


tn_0104001.JPG 





Green_needlegrass,_basal_leaves

Green needlegrass, basal leaves (R. F. Jepson, Colorado State University)


tn_4031006.JPG 





Green_needlegrass_panicle

Green needlegrass panicle (Lair, Colorado State University)


tn_4031050.JPG 





Ground_cherry_in_dry_beans

Ground cherry in dry beans (H. F. Schwartz, Colorado State University)


tn_0916017.JPG 





Groundcherry,_smooth;_Physalis_subglabrata

Groundcherry, smooth; adult; Physalis subglabrata (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_20A.JPG 





Groundcherry,_smooth;_Physalis_subglabrata

Groundcherry, smooth; flower; Physalis subglabrata (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_20F.JPG 





Groundcherry,_smooth;_Physalis_subglabrata

Groundcherry, smooth; flower and leaf; Physalis subglabrata (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_20FL.JPG 





Groundsel,_common;_Senecio_vulgaris

Groundsel, common; adult; Senecio vulgaris (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_04A.JPG 





Groundsel,_common;_Senecio_vulgaris

Groundsel, common; adult; Senecio vulgaris (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_04A2.JPG 





Groundsel,_common;_Senecio_vulgaris

Groundsel, common; flower; Senecio vulgaris (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_04F.JPG 





Groundsel_(Senecio_sp.)

Groundsel (Senecio sp.)


tn_USDAW035.JPG 





Guinea_grass_(Gramineae,_Panicum_maximum_Jacq.)

Guinea grass (Gramineae, Panicum maximum Jacq.)(FAW) )


tn_FAOW040A.JPG 

(Drawing)


tn_FAOW040D.JPG 





Gumweed,_curlycup;_Grindelia_squarrosa

Gumweed, curlycup; adult; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_03A.JPG 





Gumweed,_curlycup;_Grindelia_squarrosa

Gumweed, curlycup; flower; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_03F.JPG 





Gumweed,_curlycup;_Grindelia_squarrosa

Gumweed, curlycup; leaf; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_03L.JPG 





Gumweed,_curlycup;_Grindelia_squarrosa

Gumweed, curlycup; seedling; Grindelia squarrosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_03S.JPG 





Hairy_(left),_cutleaf_(center)_and_black_(right)_nightshades

Hairy (left), cutleaf (center)and black (right)nightshades (R. G. Wilson, Colorado State University)


tn_1111069.JPG 





Hairy_galinsoga_(Galinsoga_ciliata)

Hairy galinsoga (Galinsoga ciliata)


tn_USDAW029.JPG 





Hairy_nightshade_berries,_immature_with_star_pattern

Hairy nightshade berries, immature with star pattern (P. Westra, Colorado State University)


tn_0746071.JPG 





Hairy_nightshade_berries_which_do_not_darken

Hairy nightshade berries which do not darken (P. Westra, Colorado State University)


tn_0746069.JPG 





Hairy_nightshade_flower

Hairy nightshade flower (P. Westra, Colorado State University)


tn_0746072.JPG 





Hairy_nightshade_plant

Hairy nightshade plant (H. F. Schwartz, Colorado State University)


tn_1111068.JPG 





Hairy_nightshade_plant

Hairy nightshade plant (P. Westra, Colorado State University)


tn_0746073.JPG 





Hairy_nightshade_seedling

Hairy nightshade seedling (P. Westra, Colorado State University)


tn_0746065.JPG 





Hairy_nightshade_seedling

Hairy nightshade seedling (R. G. Wilson, Colorado State University)


tn_1111067.JPG 





Hairy_vetch_seeds

Hairy vetch seeds (H. F. Schwartz, Colorado State University)


tn_1225069.JPG 





Halogeton

Halogeton (L. L. Berry, Colorado State University)


tn_0100072.JPG 





Halogeton,_Halogeton_glomeratus

Halogeton adult, Halogeton glomeratus (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_07A.JPG 





Halogeton,_Halogeton_glomeratus

Halogeton leaf, Halogeton glomeratus (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_07L.JPG 





Halogeton_plant

Halogeton plant (L. L. Berry, Colorado State University)


tn_0100073.JPG 





Halogeton_seed_head

Halogeton seed head (L. L. Berry, Colorado State University)


tn_0100074.JPG 





Hartwort,_Egyptian

Egyptian hartwort; Hartwort, Egyptian; Tordylium aegyptiacum (L.)Lam. (FNE)


tn_FAONE216.JPG 





Heartleaf_drymary_(Drymaria_cordata)

heartleaf drymary (Drymaria cordata)


tn_USDAW011.JPG 





Helianthus_annus_sunflower

Helianthus annus sunflower (fully grown plant)


tn_SOY127.JPG 





Hemlock,_poison;_Conium_maculatum

Hemlock, poison; adult; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_06A.JPG 





Hemlock,_poison;_Conium_maculatum

Hemlock, poison; flower; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_06F.JPG 





Hemlock,_poison;_Conium_maculatum

Hemlock, poison; seedling; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_06L.JPG 





Hemlock,_poison;_Conium_maculatum

Hemlock, poison; rosette; Conium maculatum (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_06S.JPG 





Hemlock,_water;_Cicuta_maculata

Hemlock, water; adult; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_07A.JPG 





Hemlock,_water;_Cicuta_maculata

Hemlock, water; flower; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_07F.JPG 





Hemlock,_water;_Cicuta_maculata

Hemlock, water; leaf; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_07L.JPG 





Hemlock,_water;_Cicuta_maculata

Hemlock, water; roots; Cicuta maculata (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_07R.JPG 





Hemp_dogbane_(Apocynum_cannabinum)

Hemp dogbane (Apocynum cannabinum)


tn_USDAW005.JPG 





Hemp_sesbania_(Sesbania_exaltata)

Hemp sesbania (Sesbania exaltata)


tn_USDAW085.JPG 





Henbane,_black;_Hyoscyamus_niger

Henbane, black; adult; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_04A.JPG 





Henbane,_black;_Hyoscyamus_niger

Henbane, black; flower; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_04F.JPG 





Henbane,_black;_Hyoscyamus_niger

Henbane, black; fruit; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_04F2.JPG 





Henbane,_black;_Hyoscyamus_niger

Henbane, black; seedling; Hyoscyamus niger (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_04S.JPG 





Henbit,_great_1

Great henbit; Henbit, great; Kurray; Lamium amplexicaule L.; Larnium paczoskianum Vorosch.; Larnium rumelicum ssp orientale Pacz. ; Uj'ajeh (FNE)


tn_FAONE136.JPG 





Henbit,_great_2

Great henbit; Henbit, great; Kurray; Lamium amplexicaule L.; Larnium paczoskianum Vorosch.; Larnium rumelicum ssp orientale Pacz. ; Uj'ajeh (FNE)


tn_FAONE137.JPG 





Henbit,_Lamium_amplexicaule

Henbit flower, Lamium amplexicaule (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_05F.JPG 





Henbit,_Lamium_amplexicaule

Henbit seedling, Lamium amplexicaule (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_05S.JPG 





Henbit_(Lamium_amplexicaule)

Henbit (Lamium amplexicaule)


tn_USDAW078.JPG 





Highland_nutsedge_(Cyperaceae,_Cyperus_rigidifofius_Steud.)

Highland nutsedge (Cyperaceae, Cyperus rigidifofius Steud.)(FAW) )


tn_FAOW026A.JPG 

(Drawing)


tn_FAOW026D.JPG 





Hoary_Cress

Hoary Cress (L. L. Berry, Colorado State University)


tn_0100007.JPG 





Hoary_cress/White_top

Cardaria draba (L.)Desv.; Cress, hoary; Gnaibreh; Hoary cress; Lepidium draba L.; Lislis; Qana-barri; White top (FNE)


tn_FAONE078.JPG 





Hoary_Cress_flowers

Hoary Cress flowers (L. L. Berry, Colorado State University)


tn_0100008.JPG 





Hoary_Cress_infestation

Hoary Cress infestation (L. L. Berry, Colorado State University)


tn_0100005.JPG 





Hoary_Cress_leaves

Hoary Cress leaves (L. L. Berry, Colorado State University)


tn_0100006.JPG 





honeyvine_milkweed_(Ampelamus_albidus)

honeyvine milkweed (Ampelamus albidus)


tn_USDAW006.JPG 





horsenettle(Solanum_carolinensa)

horsenettle(Solanum carolinensa)


tn_USDAW114.JPG 





horseweed_(Erigeron_canadensis)

horseweed (Erigeron canadensis)


tn_USDAW027.JPG 





Houndstongue

Houndstongue (L. L. Berry, Colorado State University)


tn_0100093.JPG 





Houndstongue

Houndstongue (L. L. Berry, Colorado State University)


tn_0100094.JPG 





Houndstongue,_Cynoglossum_officinale

Houndstongue adult, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_06A.JPG 





Houndstongue,_Cynoglossum_officinale

Houndstongue seeds, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_06D.JPG 





Houndstongue,_Cynoglossum_officinale

Houndstongue flower, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_06F.JPG 





Houndstongue,_Cynoglossum_officinale

Houndstongue seedling, Cynoglossum officinale (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_06S.JPG 





Houndstongue_rosette

Houndstongue rosette (L. L. Berry, Colorado State University)


tn_0100069.JPG 





Houndstongue_seed

Houndstongue seed (L. L. Berry, Colorado State University)


tn_0100071.JPG 





Houndstongue_seed_heads

Houndstongue seed heads (L. L. Berry, Colorado State University)


tn_0100070.JPG 





Imperata_cylindrica

Imperata cylindrica (FAO_MTG)


tn_FAOM02B.JPG 





Inland_saltgrass

Inland saltgrass (R. F. Jepson, Colorado State University)


tn_4031007.JPG 





Ipomoea_hederacea__ivyleaf_morningglory

Ipomoea hederacea ivyleaf morningglory (seedling)


tn_SOY118.JPG 





Ipomoea_sp._Morningglory

Ipomoea sp. Morningglory (infested field)


tn_SOY119.JPG 





Itch_grass_(Gramineae,_Rottboellia_cochinchinensis_Lour._W.D._Clayton)

Itch_grass_(Gramineae, Rottboellia cochinchinensis (Lour.)W.D. Clayton)(FAW) )


tn_FAOW042A.JPG 

(Drawing)


tn_FAOW042D.JPG 





Japanese_brome_panicle

Japanese brome panicle (Lair, Colorado State University)


tn_4031049.JPG 





Japanese_honeysuckle_(Lonicera_japonica)

Japanese honeysuckle (Lonicera japonica)


tn_USDAW009.JPG 





Jimpson_weed_plant_in_dry_bean_field

Jimpson weed plant in dry bean field (P. Westra, Colorado State University)


tn_0746059.JPG 





Jimpson_weed_seed_pod_and_spines

Jimpson weed seed pod and spines (P. Westra, Colorado State University)


tn_0746061.JPG 





Jimpson_weed_seedling_and_cotyledons

Jimpson weed seedling and cotyledons (P. Westra, Colorado State University)


tn_0746058.JPG 





Jimsonweed

Jimsonweed (H. F. Schwartz, Colorado State University)


tn_4036012.JPG 





Jimsonweed_(Datura_stramonium)

Jimsonweed (Datura stramonium)


tn_USDAW112.JPG 





Jimsonweed_plant

Jimsonweed plant (G. Y. Frissoe, Colorado State University)


tn_1111053.JPG 





Jimsonweed_seed_capsule

Jimsonweed seed capsule (G. Y. Frissoe, Colorado State University)


tn_1111054.JPG 





Jimpson_weed_flower

Jimpson weed flower (P. Westra, Colorado State University)


tn_0746060.JPG 





Johnson_grass

Johnson grass; Aleppo grass; Hashishet el faras; Kusaibeh; Sorghum halepense (L.)Pers. (FNE)


tn_FAONE132.JPG 





Johnson_grass_in_dry_beans

Johnson grass in dry beans (H. F. Schwartz, Colorado State University)


tn_0916016.JPG 





Johnsongrass

Johnsongrass (H. F. Schwartz, Colorado State University)


tn_3658020.JPG 





Johnsongrass

Johnsongrass (Lair, Colorado State University)


tn_4031048.JPG 





Johnsongrass

Johnsongrass (H. F. Schwartz, Colorado State University)


tn_4036049.JPG 





Johnsongrass_(Sorghum_halepense)

Johnsongrass adult (Sorghum halepense)(Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_05A.JPG 





Johnsongrass_(Sorghum_halepense)

Johnsongrass (Sorghum halepense)


tn_USDAW076.JPG 





Johnsongrass_*_Sorghum_halepense

Johnsongrass flower * Sorghum halepense (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_05F.JPG 





Johnsongrass_*_Sorghum_halepense

Johnsongrass ligule * Sorghum halepense (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_05G.JPG 





Johnsongrass_*_Sorghum_halepense

Johnsongrass roots * Sorghum halepense (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_05R.JPG 





Johnsongrass_in_beans

Johnsongrass in beans (H. F. Schwartz, Colorado State University)


tn_3658025.JPG 





Johnsongrass_in_onions

Johnsongrass in onions (H. F. Schwartz, Colorado State University)


tn_0203041.JPG 





Johnsongrass_in_onions

Johnsongrass in onions (H. F. Schwartz, Colorado State University)


tn_0203042.JPG 





Johnsongrass_in_pole_bean_field

Johnsongrass in pole bean field (H. F. Schwartz, Colorado State University)


tn_4035097.JPG 





Johnsongrass_seeds

Johnsongrass seeds (H. F. Schwartz, Colorado State University)


tn_1225055.JPG 





Jointed_Goatgrass

Jointed Goatgrass (H. F. Schwartz, Colorado State University)


tn_4036051.JPG 





Jointed_goatgrass_cylinders

Jointed goatgrass cylinders (P. Westra, Colorado State University)


tn_0104041.JPG 





Jointed_goatgrass_diagram

Jointed goatgrass diagram (S. J. Nissen, Colorado State University)


tn_1112074.JPG 





Jointed_goatgrass_in_wheat

Jointed goatgrass in wheat (P. Westra, Colorado State University)


tn_0104044.JPG 





Jointed_goatgrass_infested_with_Russian_wheat_aphid

Jointed goatgrass infested with Russian wheat aphid (P. Westra, Colorado State University)


tn_0104046.JPG 





Jointed_goatgrass_patch_in_wheat

Jointed goatgrass patch in wheat (P. Westra, Colorado State University)


tn_0104045.JPG 





Jointed_goatgrass_seedling_in_field

Jointed goatgrass seedling in field (P. Westra, Colorado State University)


tn_0104043.JPG 





Jointed_goatgrass_seeds

Jointed goatgrass seeds (H. F. Schwartz, Colorado State University)


tn_1225056.JPG 





Kentucky_bluegrass_panicle

Kentucky bluegrass panicle (Lair, Colorado State University)


tn_4031035.JPG 





Kikuyu_grass_(Gramineae,_Pennisetum_clandestinum_Chiov.)

Kikuyu grass (Gramineae, Pennisetum clandestinum Chiov.)(FAW) )


tn_FAOW041A.JPG 

(Drawing)


tn_FAOW041D.JPG 





Knapweed,_diffuse;_Centaurea_diffusa

Knapweed, diffuse; adult; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_08A.JPG 





Knapweed,_diffuse;_Centaurea_diffusa

Knapweed, diffuse; bracts; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_08D.JPG 





Knapweed,_diffuse;_Centaurea_diffusa

Knapweed, diffuse; flower; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_08F.JPG 





Knapweed,_diffuse;_Centaurea_diffusa

Knapweed, diffuse; flower; Centaurea diffusa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_08F2.JPG 





Knapweed,_Russian;_Centaurea_repens

Knapweed, Russian; adult; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_09A.JPG 





Knapweed,_Russian;_Centaurea_repens

Knapweed, Russian; bracts; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_09D.JPG 





Knapweed,_Russian;_Centaurea_repens

Knapweed, Russian; flower; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_09F.JPG 





Knapweed,_Russian;_Centaurea_repens

Knapweed, Russian; seedling; Centaurea repens (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_09S.JPG 





Knapweed,_spotted;_Centaurea_maculosa

Knapweed, spotted; adult; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_10A.JPG 





Knapweed,_spotted;_Centaurea_maculosa

Knapweed, spotted; flower; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_10F.JPG 





Knapweed,_spotted;_Centaurea_maculosa

Knapweed, spotted; bracts; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_10F2.JPG 





Knapweed,_spotted;_Centaurea_maculosa

Knapweed, spotted; seedling; Centaurea maculosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_10S.JPG 





Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa

Knapweed, squarrose; adult; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_11A.JPG 





Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa

Knapweed, squarrose; flower; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_11F.JPG 





Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa

Knapweed, squarrose; flower; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_11F2.JPG 





Knapweed,_squarrose;_Centaurea_virgata_var._squarrosa

Knapweed, squarrose; seedling; Centaurea virgata var. squarrosa (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_11S.JPG 





Knapweed_biocontrol_agents_

Knapweed biocontrol agents (L. L. Berry, Colorado State University)


tn_0094061.JPG 





Knotgrass

Knotgrass; Polygonum aviculare L.; Polygonum heterophyllum Lindman; Polygonum littorale; Qoddab (FNE)


tn_FAONE184.JPG 





Knotgrass_(Polygonaceae,_Polygonum_aviculare_L.)

Knotgrass, Polygonaceae, Polygonum aviculare L. (FAW) )


tn_FAOW052A.JPG 

(Drawing)


tn_FAOW052D.JPG 





Knotweed,_prostrate;_Polygonum_aviculare

Knotweed, prostrate; adult; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_06A.JPG 





Knotweed,_prostrate;_Polygonum_aviculare

Knotweed, prostrate; flower; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_06F.JPG 





Knotweed,_prostrate;_Polygonum_aviculare

Knotweed, prostrate; seedling; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_06S.JPG 





Knotweed,_prostrate;_Polygonum_aviculare

Knotweed, prostrate; leaf; Polygonum aviculare (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_06L.JPG 





knotweed_(Polygonum_sp.)_

knotweed (Polygonum sp.)


tn_USDAW098.JPG 





Kochia

Kochia (H. F. Schwartz, Colorado State University)


tn_4036011.JPG 





Kochia

Kochia (H. F. Schwartz, Colorado State University)


tn_3658021.JPG 





Kochia,_dense_stand_beneath_mother_plant

Kochia, dense stand beneath mother plant (P. Westra, Colorado State University)


tn_0746014.JPG 





Kochia,_dense_stand_in_spring

Kochia, dense stand in spring (P. Westra, Colorado State University)


tn_0746013.JPG 





Kochia,_early_stage_in_spring

Kochia, early stage in spring (P. Westra, Colorado State University)


tn_0746010.JPG 





Kochia,_green_stem

Kochia, green stem (P. Westra, Colorado State University)


tn_0746020.JPG 





Kochia,_Kochia_scoparia

Kochia adult, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_09A.JPG 





Kochia,_Kochia_scoparia

Kochia adult, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_09A2.JPG 





Kochia,_Kochia_scoparia

Kochia field, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_09X.JPG 





Kochia,_Kochia_scoparia

Kochia seedling, Kochia scoparia (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_09S.JPG 





Kochia,_mature_triazine_resistant_plant

Kochia, mature triazine resistant plant (P. Westra, Colorado State University)


tn_0746017.JPG 





Kochia,_multiple_side_shoots

Kochia, multiple side shoots (P. Westra, Colorado State University)


tn_0746012.JPG 





Kochia,_puffball_stage_in_early_spring

Kochia, puffball stage in early spring (P. Westra, Colorado State University)


tn_0746011.JPG 





Kochia,_red_flowers

Kochia, red flowers (P. Westra, Colorado State University)


tn_0746024.JPG 





Kochia,_red_stem

Kochia, red stem (P. Westra, Colorado State University)


tn_0746019.JPG 





Kochia,_triazine_resistant_in_corn_field

Kochia, triazine resistant in corn field (P. Westra, Colorado State University)


tn_0746016.JPG 





Kochia,_yellow_flower_closeup

Kochia, yellow flower closeup (P. Westra, Colorado State University)


tn_0746022.JPG 





Kochia_+_onion

Kochia + onion (H. F. Schwartz, Colorado State University)


tn_3658005.JPG 





Kochia_branch_in_full_flower

Kochia branch in full flower (P. Westra, Colorado State University)


tn_0746021.JPG 





Kochia_leaf_shape_and_size_variation

Kochia leaf shape and size variation (P. Westra, Colorado State University)


tn_0746018.JPG 





Kochia_pollen_feeding_by_blister_beetle

Kochia pollen feeding by blister beetle (P. Westra, Colorado State University)


tn_0746025.JPG 





Kochia_pollen_grain_under_SEM

Kochia pollen grain under SEM (P. Westra, Colorado State University)


tn_0746023.JPG 





Kochia_seeds

Kochia seeds (H. F. Schwartz, Colorado State University)


tn_1225057.JPG 





kudzu_(Pueraria_lobata)

kudzu (Pueraria lobata)


tn_USDAW084.JPG 





Ladysthumb,_Polygonum_persicaria

Ladysthumb adult, Polygonum persicaria (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_06A.JPG 





Ladysthumb,_Polygonum_persicaria

Ladysthumb flower, Polygonum persicaria (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_06F.JPG 





Lambsquarter_in_dry_beans

Lambsquarter in dry beans (H. F. Schwartz, Colorado State University)


tn_0916020.JPG 





Lambsquarter_in_onion

Lambsquarter in onion (H. F. Schwartz, Colorado State University)


tn_1413091.JPG 





Lambsquarter_seedling

Lambsquarter seedling (R. G. Wilson, Colorado State University)


tn_1111060.JPG 





Lambsquarters,_Chenopodium_album

Lambsquarters adult, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_07A.JPG 





Lambsquarters,_Chenopodium_album

Lambsquarters adult, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_07A2.JPG 





Lambsquarters,_Chenopodium_album

Lambsquarters seedling, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_07S.JPG 





Lambsquarters,_Chenopodium_album

Lambsquarters seedling, Chenopodium album (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_07S2.JPG 





Lambsquarters_+_onion

Lambsquarters + onion (H. F. Schwartz, Colorado State University)


tn_3658007.JPG 





Lambsquarters_+_spinach_red_rust

Lambsquarters + spinach red rust (H. F. Schwartz, Colorado State University)


tn_0812097.JPG 





Lambsquarters_+_spinach_red_rust

Lambsquarters + spinach red rust (H. F. Schwartz, Colorado State University)


tn_0812098.JPG 





Lambsquarters_+_spinach_red_rust

Lambsquarters + spinach red rust (H. F. Schwartz, Colorado State University)


tn_0812099.JPG 





Lambsquarters_seeds

Lambsquarters seeds (H. F. Schwartz, Colorado State University)


tn_1225058.JPG 





Lanceleaf_Sage

Lanceleaf Sage (H. F. Schwartz, Colorado State University)


tn_4036009.JPG 





Lanceleaf_sage

Lanceleaf sage (P. Westra, Colorado State University)


tn_0746081.JPG 





Lanceleaf_sage_plants_in_dry_bean_field

Lanceleaf sage plants in dry bean field (P. Westra, Colorado State University)


tn_0746080.JPG 





Lantana_camara,_pink-flowered_form

Lantana camara, pink-flowered form (FAO_MTG)


tn_FAOM04A.JPG 





Large_barnyardgrass_plant_seed_heads

Large barnyardgrass plant seed heads (P. Westra, Colorado State University)


tn_0104009.JPG 





Large_crabgrass_(Digitaria_sanguinalis)

Large crabgrass (Digitaria sanguinalis)


tn_USDAW066.JPG 





Large_sandbur_plant

Large sandbur plant (P. Westra, Colorado State University)


tn_0104026.JPG 





Larkspur,_Delphinium_geyerii

Larkspur, Delphinium geyerii (L. L. Berry, Colorado State University)


tn_0094033.JPG 





Late_weed_(Boraginaceae,_Trichodesma_zeylanicum_L._R._Br.)

Late weed (Boraginaceae, Trichodesma zeylanicum (L.)R. Br.)(FAW) )


tn_FAOW004A.JPG 

(Drawing)


tn_FAOW004D.JPG 





Leaf_Spurge_heart-shaped_bracts

Leaf Spurge heart-shaped bracts (L. L. Berry, Colorado State University)


tn_0100018.JPG 





Leafy_Spurge

Leafy Spurge (H. F. Schwartz, Colorado State University)


tn_4036039.JPG 





Leafy_Spurge,_Canada_Thistle_and_Russian_Knapweed_perennial_roots

Leafy Spurge, Canada Thistle and Russian Knapweed perennial roots (L. L. Berry, Colorado State University)


tn_0100038.JPG 





Leafy_Spurge,_flowering

Leafy Spurge, flowering (K. G. Beck, Colorado State University)


tn_0502062.JPG 





Leafy_Spurge,_late_flowering

Leafy Spurge, late flowering (K. G. Beck, Colorado State University)


tn_0502064.JPG 





Leafy_Spurge,_leaf_shape_+_latex

Leafy Spurge, leaf shape + latex (K. G. Beck, Colorado State University)


tn_0502063.JPG 





Leafy_Spurge,_sheep_grazing_for_control

Leafy Spurge, sheep grazing for control (K. G. Beck, Colorado State University)


tn_0502058.JPG 





Leafy_Spurge,_vegetative_reproduction

Leafy Spurge, vegetative reproduction (K. G. Beck, Colorado State University)


tn_0502059.JPG 





Leafy_Spurge,_whole_plant_flowering

Leafy Spurge, whole plant flowering (K. G. Beck, Colorado State University)


tn_0502060.JPG 





Leafy_Spurge_at_Meeker,_grazed_left,_ungrazed_right

Leafy Spurge at Meeker, grazed left, ungrazed right (K. G. Beck, Colorado State University)


tn_0502057.JPG 





Leafy_Spurge_field

Leafy Spurge field (L. L. Berry, Colorado State University)


tn_0094035.JPG 





Leafy_Spurge_root_crown_and_root_buds

Leafy Spurge root crown and root buds (L. L. Berry, Colorado State University)


tn_0100016.JPG 





Leafy_Spurge_seed

Leafy Spurge seed (L. L. Berry, Colorado State University)


tn_0100019.JPG 





Leafy_spurge_seeds

Leafy spurge seeds (H. F. Schwartz, Colorado State University)


tn_1225059.JPG 





Leafy_Spurge_with_yello-green_bracts

Leafy Spurge with yello-green bracts (L. L. Berry, Colorado State University)


tn_0100014.JPG 





Leptochloa_chinensis

Leptochloa chinensis (FRW)


tn_R10.JPG 





Liquorice,_common

Common liquorice; Glycyrrhiza glabra L.; Glycyrrhiza glandulifera Waldst. & Kit.; I'rk soos; Liquorice, common; Soos (FNE)


tn_FAONE140.JPG 





little_barley_(Hordeum_pusillum)

little barley (Hordeum pusillum)


tn_USDAW069.JPG 





Little_bluestem

Little bluestem (Lair, Colorado State University)


tn_4031020.JPG 





London_rocket

London rocket; Hwairreh; Kibseh; Saleeh; Sisymbrium irio L. (FNE)


tn_FAONE090.JPG 





Love_grass_(Gramineae,_Setaria_verticillata_L._P._Beauv.)

Love grass (Gramineae, Setaria verticillata (L.)P. Beauv.)(FAW) )


tn_FAOW044A.JPG 

(Drawing)


tn_FAOW044D.JPG 





Low_larkspur,_Delphinium_spp.

Low larkspur flower, Delphinium spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_08F2.JPG 





Low_larkspur,_Delphinium_spp.

Low larkspur flower and leaf, Delphinium spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_08FL.JPG 





Ludwigia_octovalvis

Ludwigia octovalvis (FRW)


tn_R08.JPG 





Ludwigia_prostrata

Ludwigia prostrata (FRW)


tn_R19.JPG 





Lupine,_Lupinus_spp.

Lupine adult, Lupinus spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_09A.JPG 





Lupine,_Lupinus_spp.

Lupine flower, Lupinus spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_09F.JPG 





Lupine,_Lupinus_spp.

Lupine flower, Lupinus spp. (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_09F2.JPG 





Macdonaldi_(Compositae,_Galinsoga_parviflora_Cav.)

Macdonaldi (Compositae, Galinsoga parviflora Cav. (FAW) )


tn_FAOW014A.JPG 

(Drawing)


tn_FAOW014D.JPG 





Mallow,_bull

Bull mallow; Mallow, bull; Malva montana Forsk.; Malva nicaeensis All. (FNE)


tn_FAONE156.JPG 





Mallow_(Malvaceae,_Malva_verticillata_L.)

Mallow_(Malvaceae, Malva verticillata L.)(FAW) )


tn_FAOW045A.JPG 

(Drawing)


tn_FAOW045D.JPG 





Malvaceae,_Sida_acuta_Burm._f.

Malvaceae, Sida acuta Burm. f. (FAW) )


tn_FAOW046A.JPG 

(Drawing)


tn_FAOW046D.JPG 





Marshelder,_Iva_xanthifolia

Marshelder adult, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_06A.JPG 





Marshelder,_Iva_xanthifolia

Marshelder flower, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_06F.JPG 





Marshelder,_Iva_xanthifolia

Marshelder flower and leaf, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_06FL.JPG 





Marshelder,_Iva_xanthifolia

Marshelder leaf, Iva xanthifolia (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_06L.JPG 





maypop_passionflower_(Passiflora_incarnata)

maypop passionflower (Passiflora incarnata)


tn_USDAW093.JPG 





mayweed_(Anthemis_cotula)

mayweed (Anthemis cotula)


tn_USDAW020.JPG 





Mayweed_(False_Chamomile),_Authemis_cotula

Mayweed (False Chamomile), Authemis cotula (L. L. Berry, Colorado State University)


tn_0094019.JPG 





Mediterranean_Sage

Mediterranean Sage (L. L. Berry, Colorado State University)


tn_0094027.JPG 





Mediterranean_Sage

Mediterranean Sage (L. L. Berry, Colorado State University)


tn_0094029.JPG 





Mediterranean_Sage,_Salvia_aethiopis

Mediterranean Sage, Salvia aethiopis (L. L. Berry, Colorado State University)


tn_0094026.JPG 





Mediterranean_Sage_(Gray_Areas)

Mediterranean Sage (Gray Areas) (L. L. Berry, Colorado State University)


tn_0094028.JPG 





Medusahead,_Taeniatherum_caput-medusae

Medusahead adult, Taeniatherum caput-medusae (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_10A.JPG 





Medusahead,_Taeniatherum_caput-medusae

Medusahead flower, Taeniatherum caput-medusae (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_10F.JPG 





Medusahead,_Taeniatherum_caput-medusae

Medusahead seeds, Taeniatherum caput-medusae (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_10F2.JPG 





Melilot,_indian

Indian melilot; Handaqooq; Melilot, indian; Melilotus indica (L.)AI1. (FNE)


tn_FAONE146.JPG 





Mercury,_annual

Annual mercury; Mercurialis annua L.; Mercury, annual (FNE)


tn_FAONE104.JPG 





Mesquite/Yanbut

Mesquite; Prosopis farcta (Banks & Sol.)Macbride ; Shilshilawe; Yanbut (FNE)


tn_FAONE148.JPG 





Mexican_poppy_(Papaveraceae,_Argemone_mexicana_L.)

Mexican poppy (Papaveraceae, Argemone mexicana L.)(FAW) )


tn_FAOW048A.JPG 

(Drawing)


tn_FAOW048D.JPG 





Milk_vetch_seeds

Milk vetch seeds (H. F. Schwartz, Colorado State University)


tn_1225070.JPG 





Milkweed_in_dry_beans

Milkweed in dry beans (H. F. Schwartz, Colorado State University)


tn_0916022.JPG 





Mimosa_pigra

Mimosa pigra (FAO_MTG)


tn_FAOM04B.JPG 





Mistletoe,_oriental

Mistletoe, oriental; Dabak; E'nebbeh; Oriental mistletoe; Viscum cruciatum Sieb. (FNE)


tn_FAONE154.JPG 





Monochoria_vaginalis

Monochoria vaginalis (FRW)


tn_R02.JPG 





Monochoria_vaginalis

Monochoria vaginalis (FRW)


tn_R14.JPG 





Morningglory_in_beans

Morningglory in beans (H. F. Schwartz, Colorado State University)


tn_3658026.JPG 





Morningglory_in_onions

Morningglory in onions (H. F. Schwartz, Colorado State University)


tn_2216049.JPG 





Morningglory_in_onions

Morningglory in onions (H. F. Schwartz, Colorado State University)


tn_2216050.JPG 





Morningglory

Morningglory (H. F. Schwartz, Colorado State University)


tn_1206001.JPG 





Morningglory

Morningglory (H. F. Schwartz, Colorado State University)


tn_1206002.JPG 





Morningglory

Morningglory (H. F. Schwartz, Colorado State University)


tn_1206003.JPG 





Mouseear_chickweed_(Cerastium_vulgatum)

Mouseear chickweed (Cerastium vulgatum)


tn_USDAW012.JPG 





Musk_Thistle

Musk Thistle (H. F. Schwartz, Colorado State University)


tn_4036036.JPG 





Musk_Thistle,_collection_of_T._horridus_in_infested_weeds

Musk Thistle, collection of T. horridus in infested weeds (L. L. Berry, Colorado State University)


tn_0094040.JPG 





Musk_Thistle,_infestation_near_Collbran

Musk Thistle, infestation near Collbran (L. L. Berry, Colorado State University)


tn_0094041.JPG 





Musk_Thistle,_infestation_near_Collbran_3_years_later

Musk Thistle, infestation near Collbran 3 years later (L. L. Berry, Colorado State University)


tn_0094042.JPG 





Musk_Thistle_1st-year_rosette

Musk Thistle 1st-year rosette (K. G. Beck, Colorado State University)


tn_0502085.JPG 





Musk_Thistle_2nd-year_rosette

Musk Thistle 2nd-year rosette (K. G. Beck, Colorado State University)


tn_0502086.JPG 





Musk_Thistle_2nd-year_rosette

Musk Thistle 2nd-year rosette (L. L. Berry, Colorado State University)


tn_0100049.JPG 





Musk_Thistle_flowering_stages

Musk Thistle flowering stages (K. G. Beck, Colorado State University)


tn_0502084.JPG 





Musk_thistle_infestation

Musk thistle infestation (H. F. Schwartz, Colorado State University)


tn_1413049.JPG 





Musk_Thistle_infestation

Musk Thistle infestation (L. L. Berry, Colorado State University)


tn_0100048.JPG 





Musk_Thistle_plant

Musk Thistle plant (L. L. Berry, Colorado State University)


tn_0100052.JPG 





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)


tn_0100051.JPG 





Mustard

Mustard (H. F. Schwartz, Colorado State University)


tn_1413099.JPG 





Mustard

Mustard (L. L. Berry, Colorado State University)


tn_0100083.JPG 





Mustard

Mustard (L. L. Berry, Colorado State University)


tn_0100084.JPG 





Mustard

Mustard (L. L. Berry, Colorado State University)


tn_0100085.JPG 





Mustard,_black;_Brassica_nigra

Mustard, black; adult; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_08A.JPG 





Mustard,_black;_Brassica_nigra

Mustard, black; fruit; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_08F.JPG 





Mustard,_black;_Brassica_nigra

Mustard, black; flower; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_08F2.JPG 





Mustard,_black;_Brassica_nigra

Mustard, black; leaf; Brassica nigra (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_08L.JPG 





Mustard,_blue;_Chorispora_tenella

Mustard, blue; adult; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_09A.JPG 





Mustard,_blue;_Chorispora_tenella

Mustard, blue; flower; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_09F.JPG 





Mustard,_blue;_Chorispora_tenella

Mustard, blue; fruit; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_09Z.JPG 





Mustard,_blue;_Chorispora_tenella

Mustard, blue; stem; Chorispora tenella (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_09Z2.JPG 





Mustard,_hoary

Hoary mustard; Fossat; Hirschfeldia incana (L)Lagreze- Fossat; Mustard, hoary; Sinapis incana L. (FNE)


tn_FAONE082.JPG 





Mustard,_pink

Pink mustard; Erucaria aleppica Gaertner,; Erucaria hispanica (L.)Druce; Erucaria myagroides (L.)Halacsy,; Erucaria tenuifolia DC.; Mustard, pink(FNE)


tn_FAONE080.JPG 





Mustard,_tansy

mustard, tansy; flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_11F.JPG 





Mustard,_tansy

Mustard, tansy; fruit (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_11F2.JPG 





Mustard,_tansy

Mustard, tansy; seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_11S.JPG 





Mustard,_tansy

Mustard, tansy; adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_11A.JPG 





Mustard,_tumble;_Sisymbrium_altissimum

Mustard, tumble; adult; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_12A.JPG 





Mustard,_tumble;_Sisymbrium_altissimum

Mustard, tumble; adult; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_12A2.JPG 





Mustard,_tumble;_Sisymbrium_altissimum

Mustard, tumble; seedling; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_12S.JPG 





Mustard,_tumble;_Sisymbrium_altissimum

Mustard, tumble; seedling; Sisymbrium altissimum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_12S2.JPG 





Mustard,_white

Mustard, white; Sinapis alba L.; Sinapis dissecta Lag.; White mustard (FNE)


tn_FAONE086.JPG 





Mustard,_wild/Charlock

Mustard, wild; Brassica kaber (DC)L.C.Wheeler.; Charlock; Sinapis arvensis L.; Sinapis orientalis L.; Sinapis schkuhriana Reichenb. (FNE)


tn_FAONE088.JPG 





Mustard,_wild;_Brassica_kaber

Mustard, wild (Brassica kaber); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_10A.JPG 





Mustard,_wild;_Brassica_kaber

Mustard, wild (Brassica kaber); fruit (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_10F.JPG 





Mustard,_wild;_Brassica_kaber

Mustard, wild (Brassica kaber); flower and seeds (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_10FD.JPG 





Mustard,_wild;_Brassica_kaber

Mustard, wild (Brassica kaber); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_10S.JPG 





Mustard_in_onion

Mustard in onion (H. F. Schwartz, Colorado State University)


tn_1413090.JPG 





Narrowleaf_vetch_(Vicia_angustifolia)

Narrowleaf vetch (Vicia angustifolia)


tn_USDAW086.JPG 





Nettle,_small

Nettle, small; Small nettle; Urtica urens L. (FNE)


tn_FAONE218.JPG 





Nightshade

Nightshade (H. F. Schwartz, Colorado State University)


tn_3658018.JPG 





Nightshade

Nightshade (H. F. Schwartz, Colorado State University)


tn_3658019.JPG 





Nightshade

Nightshade (H. F. Schwartz, Colorado State University)


tn_4036005.JPG 





Nightshade,_bittersweet;_Solanum_dulcamara

Nightshade, bittersweet (Solanum dulcamara); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_09A.JPG 





Nightshade,_bittersweet;_Solanum_dulcamara

Nightshade, bittersweet (Solanum dulcamara); flower and fruits (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_09F.JPG 





Nightshade,_bittersweet_(Solanum_dulcamara)

Nightshade, bittersweet (Solanum dulcamara); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_09LF.JPG 





Nightshade,_cutleaf_(Solanum_triflorum)

Nightshade, cutleaf (Solanum triflorum); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_10A.JPG 





Nightshade,_cutleaf_(Solanum_triflorum)

Nightshade, cutleaf (Solanum triflorum); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_10FL.JPG 





Nightshade,_cutleaf_(Solanum_triflorum)

Nightshade, cutleaf (Solanum triflorum); seedling (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_10S.JPG 





Nightshade,_hairy_(Solanum_sarrachoides)

Nightshade, hairy (Solanum sarrachoides); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_11A.JPG 





Nightshade,_hairy_(Solanum_sarrachoides)

Nightshade, hairy (Solanum sarrachoides); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_11F.JPG 





Nightshade,_hairy_(Solanum_sarrachoides)

Nightshade, hairy (Solanum sarrachoides); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_11LF.JPG 





Nightshade,_hairy_(Solanum_sarrachoides)

Nightshade, hairy (Solanum sarrachoides); seedling (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_11S.JPG 





Nightshade_+_onion

Nightshade + onion (H. F. Schwartz, Colorado State University)


tn_3657097.JPG 





Nightshade_in_dry_beans

Nightshade in dry beans (H. F. Schwartz, Colorado State University)


tn_0916018.JPG 





Nightshade_in_dry_beans

Nightshade in dry beans (H. F. Schwartz, Colorado State University)


tn_1783070.JPG 





Nightshade_in_dry_beans

Nightshade in dry beans (H. F. Schwartz, Colorado State University)


tn_1783071.JPG 





Nightshade_leaf_+_Colorado_potato_beetle_eggs

Nightshade leaf + Colorado potato beetle eggs (P. Westra, Colorado State University)


tn_0746074.JPG 





Nightshade_seedling_and_first_true_leaves

Nightshade seedling and first true leaves (P. Westra, Colorado State University)


tn_0746066.JPG 





Nutsedge

Nutsedge (H. F. Schwartz, Colorado State University)


tn_4036046.JPG 





Nutsedge,_purple

Purple nutsedge; Cyperus esculentus L.; Nutgrass; Nutsedge, purple; Sa'd; Su'aideh (FNE)


tn_FAONE092.JPG 





Nutsedge,_yellow

Yellow nutsedge; Cyperus rotundus L. ; Nutsedge, yellow (FNE)


tn_FAONE094.JPG 





Nutsedge,_yellow_(Cyperus_esculentus)

Nutsedge, yellow (Cyperus esculentus); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_12A.JPG 





Nutsedge,_yellow_(Cyperus_esculentus)

Nutsedge, yellow (Cyperus esculentus); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_12F.JPG 





Nutsedge,_yellow_(Cyperus_esculentus)

Nutsedge, yellow (Cyperus esculentus); roots (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_12R.JPG 





Nutsedge,_yellow_(Cyperus_esculentus)

Nutsedge, yellow (Cyperus esculentus); stem (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_12T.JPG 





Nutsedge_in_beans

Nutsedge in beans (H. F. Schwartz, Colorado State University)


tn_3658027.JPG 





Nutsedge_in_onion

Nutsedge in onion (H. F. Schwartz, Colorado State University)


tn_0265050.JPG 





Nutsedge_in_onion

Nutsedge in onion (H. F. Schwartz, Colorado State University)


tn_0265051.JPG 





Nutsedge_plant

Nutsedge plant (G. Y. Frissoe, Colorado State University)


tn_1112066.JPG 





Oats,_wild_(Avena_fatua)

Oats, wild (Avena fatua); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_13A.JPG 





Oats,_wild_(Avena_fatua)

  • Oats, wild (Avena fatua); flower (Irrigated Crops)

(Steven Dewey, Utah State University)


tn_13_13F.JPG 





Oats,_wild_(Avena_fatua)

Oats, wild (Avena fatua); seed (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_13F2.JPG 





Oats,_wild_(Avena_fatua)

Oats, wild (Avena fatua); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_13S.JPG 





Olive,_Russian_(Elaegnus_angustifolia)

Olive, Russian (Elaegnus angustifolia); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_14A.JPG 





Olive,_Russian_(Elaegnus_angustifolia)

Olive, Russian (Elaegnus angustifolia); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_14A2.JPG 





Olive,_Russian_(Elaegnus_angustifolia)

Olive, Russian (Elaegnus angustifolia); seeds (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_14D.JPG 





Olive,_Russian_(Elaegnus_angustifolia)

Olive, Russian (Elaegnus angustifolia); leaf and fruit (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_14LF.JPG 





Onion,_wild_(Allium_spp.)

Onion, wild (Allium spp.); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_11A.JPG 





Onion,_wild_(Allium_spp.)

Onion, wild (Allium spp.); flower (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_11F.JPG 





Oprickly_pear_(puntia_sp.)

Oprickly pear (puntia sp.)


tn_USDAW091.JPG 





Orache_(Atriplex_patula)

Orache (Atriplex patula); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_13A.JPG 





Orache_(Atriplex_patula)

Orache (Atriplex patula); leaf and flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_13LF.JPG 





Orchardgrass_(Dactylis_glomerata)

Orchardgrass (Dactylis glomerata); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_13A.JPG 





Orchardgrass_(Dactylis_glomerata)

Orchardgrass (Dactylis glomerata); flower (Turf) (Steven Dewey, Utah State University)


tn_L1_13F.JPG 





Orchardgrass_(Dactylis_glomerata)

Orchardgrass (Dactylis glomerata); leaf (Turf) (Steven Dewey, Utah State University)


tn_L1_13L.JPG 





Orchardgrass_(Dactylis_glomerata)

Orchardgrass (Dactylis glomerata); field (Turf) (Steven Dewey, Utah State University)


tn_L1_13X.JPG 





Orchardgrass_panicle

Orchardgrass panicle (Lair, Colorado State University)


tn_4031041.JPG 





Oriental_Virgin's_Bower,_Clematis_orientalis

Oriental Virgin's Bower, Clematis orientalis (L. L. Berry, Colorado State University)


tn_0094006.JPG 





Orobanche_aegyptiaca

Orobanche aegyptiaca (FAO_MTG)


tn_FAOM07A.JPG 





Orobanche_cernua

Orobanche cernua (FAO_MTG)


tn_FAOM07D.JPG 





Orobanche_crenata

Orobanche crenata (FAO_MTG)


tn_FAOM07C.JPG 





Orobanche_ramosa

Orobanche ramosa (FAO_MTG)


tn_FAOM07B.JPG 





Oxalis_(Oxalidaceae,_Oxalis_latifolia_H.B.K.)

Oxalis_(Oxalidaceae, Oxalis latifolia H.B.K.)(FAW) )


tn_FAOW047A.JPG 

(Drawing)


tn_FAOW047D.JPG 





Palestine_chamomile

Palestine chamomile; Anthem is palaestina Reut.; Chamomile, Palestine; (FNE)


tn_FAONE048.JPG 





Parthenium_hysterophorus_flowering

Parthenium hysterophorus flowering (FAO_MTG)


tn_FAOM04D.JPG 





Parthenium_hysterophorus_seedling

Parthenium hysterophorus seedling (FAO_MTG)


tn_FAOM04C.JPG 





Partridge_pea_(Cassia_fasciculata)

Partridge pea (Cassia fasciculata)


tn_USDAW080.JPG 





Pennisetum_clandestinum,_flowering_and_vegetative_shoots

Pennisetum clandestinum, flowering and vegetative shoots (FAO_MTG)


tn_FAOM02C.JPG 





Pennsylvania_smartweed_(Polygonum_pennsylvanicum)

Pennsylvania smartweed (Polygonum pennsylvanicum)


tn_USDAW099.JPG 





Pennycress,_field_(Thlaspi_arvense)

Pennycress, field (Thlaspi arvense); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_14A.JPG 





Pennycress,_field_(Thlaspi_arvense)

Pennycress, field (Thlaspi arvense); fruit (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_14F.JPG 





Pennycress,_field_(Thlaspi_arvense)

Pennycress, field (Thlaspi arvense); flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_14F2.JPG 





Pennycress,_field_(Thlaspi_arvense)

Pennycress, field (Thlaspi arvense); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_14S.JPG 





Pennycress_in_winter_wheat

Pennycress in winter wheat (H. F. Schwartz, Colorado State University)


tn_0129055.JPG 





Pennycress_in_winter_wheat

Pennycress in winter wheat (H. F. Schwartz, Colorado State University)


tn_0129056.JPG 





Peppervine_(Ampelopsis_arborea)

peppervine (Ampelopsis arborea)


tn_USDAW120.JPG 






Pepperweed,_clasping_(Lepidium_perfoliatum)

Pepperweed, clasping (Lepidium perfoliatum); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_15A.JPG 





Pepperweed,_clasping_(Lepidium_perfoliatum)

Pepperweed, clasping (Lepidium perfoliatum); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_15A2.JPG 





Pepperweed,_clasping_(Lepidium_perfoliatum)

Pepperweed, clasping (Lepidium perfoliatum); flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_15F.JPG 





Pepperweed,_clasping_(Lepidium_perfoliatum)

Pepperweed, clasping (Lepidium perfoliatum); leaf (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_15L.JPG 





Pepperweed,_perennial_*_(Lepidium_latifolium)

Pepperweed, perennial * (Lepidium latifolium); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_15A.JPG 





Pepperweed,_perennial_*_(Lepidium_latifolium)

Pepperweed, perennial * (Lepidium latifolium); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_15A2.JPG 





Pepperweed,_perennial_*_(Lepidium_latifolium)

Pepperweed, perennial * (Lepidium latifolium); roots (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_15R.JPG 





Pepperweed,_perennial_*_(Lepidium_latifolium)

Pepperweed, perennial * (Lepidium latifolium); seedling (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_15S.JPG 





Perennial_Pepperweed

Perennial Pepperweed (L. L. Berry, Colorado State University)


tn_0100054.JPG 





Perennial_Pepperweed_seedlings

Perennial Pepperweed seedlings (L. L. Berry, Colorado State University)


tn_0100055.JPG 





Perennial_Sweetpea,_Lathryrus_latifolius

Perennial Sweetpea, Lathryrus latifolius (L. L. Berry, Colorado State University)


tn_0094003.JPG 





Perrenial_Pepperweed_infestation_in_pasture

Perrenial Pepperweed infestation in pasture (L. L. Berry, Colorado State University)


tn_0100056.JPG 





Pigeongrass_diagram

Pigeongrass diagram (S. J. Nissen, Colorado State University)


tn_1112076.JPG 





Pigeongrass_diagram

Pigeongrass diagram (S. J. Nissen, Colorado State University)


tn_1112077.JPG 





Pigeongrass_diagram

Pigeongrass diagram (S. J. Nissen, Colorado State University)


tn_1112078.JPG 





Pigeongrass_diagram

Pigeongrass diagram (S. J. Nissen, Colorado State University)


tn_1112079.JPG 





Pigeongrass_diagram

Pigeongrass diagram (S. J. Nissen, Colorado State University)


tn_1112080.JPG 





Pigweed,_prostrate

Prostrate pigweed; Amaranthus blitoides S.Watson; (FNE)


tn_FAONE024.JPG 





Pigweed,_prostrate_(Amaranthus_blitoides)

Pigweed, prostrate (Amaranthus blitoides); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_14A.JPG 





Pigweed,_prostrate_(Amaranthus_blitoides)

Pigweed, prostrate (Amaranthus blitoides); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_14A2.JPG 





Pigweed,_prostrate_(Amaranthus_blitoides)

Pigweed, prostrate (Amaranthus blitoides); leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_14L.JPG 





Pigweed,_prostrate_(Amaranthus_blitoides)

Pigweed, prostrate (Amaranthus blitoides); leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_14L2.JPG 





Pigweed,_redroot_(Amaranthus_retroflexus)

Pigweed, redroot (Amaranthus retroflexus); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_15A.JPG 





Pigweed,_redroot_(Amaranthus_retroflexus)

Pigweed, redroot (Amaranthus retroflexus); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_15F.JPG 





Pigweed,_redroot_(Amaranthus_retroflexus)

Pigweed, redroot (Amaranthus retroflexus); leaf, flower, roots (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_15LFR.JPG 





Pigweed,_redroot_(Amaranthus_retroflexus)

Pigweed, redroot (Amaranthus retroflexus); seedling (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_15S.JPG 





Pigweed,_white

White pigweed; Amaranthus angustifolius Lam.; Amaranthus graecizans L.; Amaranthus sylvestris Vill.; (FNE)


tn_FAONE026.JPG 





Pigweed_+_onion

Pigweed + onion (H. F. Schwartz, Colorado State University)


tn_3658008.JPG 





Pigweed_in_onions

Pigweed in onions (H. F. Schwartz, Colorado State University)


tn_0916008.JPG 





Pigweed_plant,_in_dry_beans

Pigweed plant, in dry beans (H. F. Schwartz, Colorado State University)


tn_0916012.JPG 





Pimpernel,_blue

Blue pimpernel; Anagallis arvensis ssp caerulea Hartman; Anagallis arvensis ssp foemina (Miller)Schinz. & Thell. ; Anagallis foemina Miller; Pimpernel, blue (FNE)


tn_FAONE192.JPG 





Pimpernel,_scarlet

Scarlet pimpernel; Anagallis arvensis L.; Anagallis parviflora Hoffmanns. & Link; Anagallis phoenicea Scop.; Anagallis platyphylla Baudo; Pimpernel, scarlet (FNE)


tn_FAONE190.JPG 





Pink_vetch

Pink vetch (H. F. Schwartz, Colorado State University)


tn_3658032.JPG 





Plantain,_broadleaf_(Plantago_major)

Plantain, broadleaf (Plantago major); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_14A.JPG 





Plantain,_buckhorn_(Plantago_lanceolata)

Plantain, buckhorn (Plantago lanceolata); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_15A.JPG 





Plantain,_buckhorn_(Plantago_lanceolata)

Plantain, buckhorn (Plantago lanceolata); flower (Turf) (Steven Dewey, Utah State University)


tn_L1_15F.JPG 





Plantain,_narrow-leaved/_Ribgrass

Ribgrass; Plantago lanceolata L.; Plantain, narrow-leaved; Widnah (FNE)


tn_FAONE182.JPG 





Poison_ivy_(Rhus_radioans)

Poison ivy (Rhus radioans)


tn_USDAW004.JPG 





Pokeberry_(Phytolacca_americana)

Pokeberry (Phytolacca americana)


tn_USDAW094.JPG 





Polygonum_sp._Smartweed

Polygonum sp. Smartweed (infested field)


tn_SOY111.JPG 





Poorjoe_(Diodia_teres)

Poorjoe (Diodia teres)


tn_USDAW108.JPG 





Poppy,_corn/Poppy,_field

Poppy, corn; Dahoon; Papaver rhoeas L.; Poppy, field; Shaka'ek anno'man; Shakeek (FNE)


tn_FAONE180.JPG 





Poppy,_prickly_long-headed_1

Prickly long-headed poppy; Papaver argemone L.; Poppy, prickly long-headed (FNE)


tn_FAONE178.JPG 





Poppy,_prickly_long-headed_2

Prickly long-headed poppy; Papaver argemone L.; Poppy, prickly long-headed (FNE)


tn_FAONE179.JPG 





Potamogeton_distinctus

Potamogeton distinctus (FRW)


tn_R20.JPG 





Povertyweed_(Iva_axillaris)

Povertyweed (Iva axillaris); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_13A.JPG 





Povertyweed_(Iva_axillaris)

Povertyweed (Iva axillaris); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_13S.JPG 





Povertyweed_(Iva_axillaris)

Povertyweed (Iva axillaris); flower (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_13F.JPG 





Povertyweed_(Iva_axillaris)

Povertyweed (Iva axillaris); seedling (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_13S2.JPG 





Prairie_junegrass

Prairie junegrass (Lair, Colorado State University)


tn_4031028.JPG 





Prairie_sandreed

Prairie sandreed (Lair, Colorado State University)


tn_4031022.JPG 





Prairie_sandreed,_hairy_ligule

Prairie sandreed, hairy ligule (Lair, Colorado State University)


tn_4031023.JPG 





Prairie_sandreed_panicle

Prairie sandreed panicle (Lair, Colorado State University)


tn_4031024.JPG 





Prickly_lettuce, Lactuca_serriola

Prickly lettuce adult, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_10A.JPG 





Prickly_lettuce, Lactuca_serriola

Prickly lettuce leaf, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_10L.JPG 





Prickly_lettuce, Lactuca_serriola

Prickly lettuce field, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_10X.JPG 





Prickly_lettuce, Lactuca_serriola

Prickly lettuce seedling, Lactuca serriola (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_10S.JPG 





Prickly_lettuce_1

Prickly lettuce; Khsaiseh; Lactuca scariola L.; Lactuca serriola L.; Libbeina (FNE)


tn_FAONE058.JPG 





Prickly_lettuce_2

Prickly lettuce; Khsaiseh; Lactuca scariola L.; Lactuca serriola L.; Libbeina (FNE)


tn_FAONE059.JPG 





Prickly_Pear_Cactus

Prickly Pear Cactus (L. L. Berry, Colorado State University)


tn_0100097.JPG 





Prickly_Pear_cactus

Prickly Pear cactus (Lair, Colorado State University)


tn_4031058.JPG 





Prickly_Pear_Cactus_infestation_of_pasture

Prickly Pear Cactus infestation of pasture (L. L. Berry, Colorado State University)


tn_0100098.JPG 





prickly_sida_(sida_spinosa)

prickly sida (sida spinosa)


tn_USDAW089.JPG 





prostrate_vervain_(Verbena_rigida)

prostrate vervain (Verbena rigida)


tn_USDAW118.JPG 





Pubescent_wheatgrass_bunch

Pubescent wheatgrass bunch (R. F. Jepson, Colorado State University)


tn_4031002.JPG 





Pubescent_wheatgrass_spikelets

Pubescent wheatgrass spikelets (R. F. Jepson, Colorado State University)


tn_4031001.JPG 





Puncture_Vine

Puncture Vine (H. F. Schwartz, Colorado State University)


tn_4036024.JPG 





Puncture_vine

Puncture vine (H. F. Schwartz, Colorado State University)


tn_3658012.JPG 





Puncture_vine

Puncture vine (H. F. Schwartz, Colorado State University)


tn_3658013.JPG 





Puncture_vine

Puncture vine (H. F. Schwartz, Colorado State University)


tn_3658014.JPG 





Puncture_vine

Puncture vine (L. L. Berry, Colorado State University)


tn_0100076.JPG 





Puncture_vine

Puncture vine; Kharshoom-an-naga; Shiqshiq; Tribulus terrestris L. (FNE)


tn_FAONE220.JPG 





Puncture_vine/Caltrops_(Zygophyllaceae,_Tribulus_terrestris_L.)

Puncture vine/Caltrops (Zygophyllaceae, Tribulus terrestris L.)(FAW) )


tn_FAOW063A.JPG 

(Drawing)


tn_FAOW063D.JPG 





Puncture_vine_(Goat's_Head)

Puncture vine (Goat's Head) (L. L. Berry, Colorado State University)


tn_0100075.JPG 





Puncture_vine_(Tribulus_terrestris)

Puncture vine (Tribulus terrestris); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_16A.JPG 





Puncture_vine_(Tribulus_terrestris)

Puncture vine (Tribulus terrestris); flower and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_16FL.JPG 





Puncture_vine_flower

Puncture vine flower (L. L. Berry, Colorado State University)


tn_0100077.JPG 





Puncture_vine_flowers

Puncture vine flowers (P. Westra, Colorado State University)


tn_0746056.JPG 





Puncture_vine_plant

Puncture vine plant (G. Y. Frissoe, Colorado State University)


tn_1112063.JPG 





Puncture_vine_plant_and_true_leaf

Puncture vine plant and true leaf (P. Westra, Colorado State University)


tn_0746055.JPG 





Puncture_vine_seed

Puncture vine seed (L. L. Berry, Colorado State University)


tn_0100078.JPG 





Puncture_vine_seed_body_and_spines

Puncture vine seed body and spines (P. Westra, Colorado State University)


tn_0746057.JPG 





Puncture_vine_seedling

Puncture vine seedling (G. Y. Frissoe, Colorado State University)


tn_1112062.JPG 





Puncture_vine_seedling_and_cotyledons

Puncture vine seedling and cotyledons (P. Westra, Colorado State University)


tn_0746054.JPG 





Puncture_vine_seeds

Puncture vine seeds (H. F. Schwartz, Colorado State University)


tn_1225062.JPG 





Puncturevine_+_onion

Puncturevine + onion (H. F. Schwartz, Colorado State University)


tn_3657095.JPG 





Purple_gooseberry_(Sol_anaceae,_Physalis_philadelphica_Lam.)

Purple gooseberry (Sol anaceae, Physalis philadelphica Lam.)(FAW) )


tn_FAOW059A.JPG 

(Drawing)


tn_FAOW059D.JPG 





Purple_locoweed

Purple locoweed (Lair, Colorado State University)


tn_4031054.JPG 





Purple_Loosestrife

Purple Loosestrife (L. L. Berry, Colorado State University)


tn_0094086.JPG 





Purple_Loosestrife

Purple Loosestrife (L. L. Berry, Colorado State University)


tn_0100095.JPG 





Purple_loosestrife, Lythrum_salicaria

Purple loosestrife adult, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_12A.JPG 





Purple_loosestrife, Lythrum_salicaria

Purple loosestrife flower, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_12F.JPG 





Purple_loosestrife, Lythrum_salicaria

Purple loosestrife flower, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_12F2.JPG 





Purple_loosestrife, Lythrum_salicaria

Purple loosestrife leaf, Lythrum salicaria (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_12L.JPG 





Purple_Loosestrife,_Lythrum_salicaria

Purple Loosestrife, Lythrum salicaria (L. L. Berry, Colorado State University)


tn_0094001.JPG 





Purple_Loosestrife,_Lythrum_salicaria

Purple Loosestrife, Lythrum salicaria (L. L. Berry, Colorado State University)


tn_0094017.JPG 





Purple_Loosestrife_infestation

Purple Loosestrife infestation (L. L. Berry, Colorado State University)


tn_0100096.JPG 





Purple_nutsedge_(Cyperaceae,_Cyperus_rotundus_L.)

Purple nutsedge (Cyperaceae, Cyperus rotundus L.)(FAW) )


tn_FAOW027A.JPG 

(Drawing)


tn_FAOW027D.JPG 





purple_nutsedge_(Cyperus_rotundus)

purple nutsedge (Cyperus rotundus)


tn_USDAW055.JPG 





Purple_vetch

Purple vetch (H. F. Schwartz, Colorado State University)


tn_3658033.JPG 





Purselane,_common

Common purselane; Baklah; Portulaca oleracea L.; Purselane, common; Rigla (FNE)


tn_FAONE188.JPG 





Purslane,_common_(Portulaca_oleracea)

Purslane, common (Portulaca oleracea); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_16A.JPG 





Purslane,_common_(Portulaca_oleracea)

Purslane, common (Portulaca oleracea); seedling (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_16S.JPG 





Purslane,_common_(Portulaca_oleracea)

Purslane, common (Portulaca oleracea); seedling (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_16S2.JPG 





Purslane_(Portulacaceae,_Portulaca_oleracea_L.)

Purslane (Portulacaceae, Portulaca oleracea L.)(FAW) )


tn_FAOW053A.JPG 

(Drawing)


tn_FAOW053D.JPG 





Purslane_+_onion

Purslane + onion (H. F. Schwartz, Colorado State University)


tn_3657099.JPG 





Purslane_+_onion

Purslane + onion (H. F. Schwartz, Colorado State University)


tn_3657100.JPG 





Purslane_plant

Purslane plant (H. F. Schwartz, Colorado State University)


tn_1111073.JPG 





Purslane_seedling

Purslane seedling (R. G. Wilson, Colorado State University)


tn_1111072.JPG 





Quackgrass_(Elytrigia_repens)

Quackgrass (Elytrigia repens); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_16A.JPG 





Quackgrass_(Elytrigia_repens)

Quackgrass (Elytrigia repens); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_16A2.JPG 





Quackgrass_(Elytrigia_repens)

Quackgrass (Elytrigia repens); flower (Turf) (Steven Dewey, Utah State University)


tn_L1_16F.JPG 





Quackgrass_(Elytrigia_repens)

Quackgrass (Elytrigia repens); roots (Turf) (Steven Dewey, Utah State University)


tn_L1_16R.JPG 





Quackgrass_seeds

Quackgrass seeds (H. F. Schwartz, Colorado State University)


tn_1225063.JPG 





Queen_Anne's_Lace,_Daucus_carota

Queen Anne's Lace, Daucus carota (L. L. Berry, Colorado State University)


tn_0094007.JPG 





Queen_Anne's_Lace,_Daucus_carota

Queen Anne's Lace, Daucus carota (L. L. Berry, Colorado State University)


tn_0094008.JPG 





Rabbitbrush_(Chrysothamnus_spp.)

Rabbitbrush (Chrysothamnus spp.); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_11A.JPG 





Rabbitbrush_(Chrysothamnus_spp.)

Rabbitbrush (Chrysothamnus spp.); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_11A2.JPG 





Rabbitbrush_(Chrysothamnus_spp.)

Rabbitbrush (Chrysothamnus spp.); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_11F.JPG 





Rabbitbrush_(Chrysothamnus_spp.)

Rabbitbrush (Chrysothamnus spp.); leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_11FL.JPG 





Rabbitfoot_grass_(Polypogon_monspeliensis)

Rabbitfoot grass (Polypogon monspeliensis); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_09A.JPG 





Rabbitfoot_grass_(Polypogon_monspeliensis)

Rabbitfoot grass (Polypogon monspeliensis); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_09F.JPG 





Rabbitfoot_grass_(Polypogon_monspeliensis)

Rabbitfoot grass (Polypogon monspeliensis); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_09F2.JPG 





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)


tn_FAONE084.JPG 





Ragweed,_western_(Ambrosia_psilostachya)

Ragweed, western (Ambrosia psilostachya); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_10A.JPG 





Ragweed,_western_(Ambrosia_psilostachya)

Ragweed, western (Ambrosia psilostachya); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_10F.JPG 





Ragweed,_western_(Ambrosia_psilostachya)

Ragweed, western (Ambrosia psilostachya); flower and leaf (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_10FL.JPG 





Red_clover_seeds

Red clover seeds (H. F. Schwartz, Colorado State University)


tn_1224003.JPG 





Red_sorrel_(Rumex_acetosella)

Red sorrel (Rumex acetosella)


tn_USDAW100.JPG 





Red_Stem_Filaree

Red Stem Filaree (H. F. Schwartz, Colorado State University)


tn_4036038.JPG 





Redroot_Pigweed

Redroot Pigweed (H. F. Schwartz, Colorado State University)


tn_4036004.JPG 





Redroot_pigweed,_2-leaf_stage

Redroot pigweed, 2-leaf stage (P. Westra, Colorado State University)


tn_0746003.JPG 





Redroot_pigweed,_cotyledon_stage

Redroot pigweed, cotyledon stage (P. Westra, Colorado State University)


tn_0746002.JPG 





Redroot_pigweed,_intermediate_size

Redroot pigweed, intermediate size (P. Westra, Colorado State University)


tn_0746005.JPG 





redroot_pigweed_(Amaranthus_retroflexus)

redroot pigweed (Amaranthus retroflexus)


tn_USDAW002.JPG 





Redroot_pigweed_flowering_with_pollen

Redroot pigweed flowering with pollen (P. Westra, Colorado State University)


tn_0746008.JPG 





Redroot_pigweed_infestation_in_corn_field

Redroot pigweed infestation in corn field (P. Westra, Colorado State University)


tn_0746006.JPG 





Redroot_pigweed_mixed_with_grass_weeds

Redroot pigweed mixed with grass weeds (P. Westra, Colorado State University)


tn_0746007.JPG 





Redroot_pigweed_plant

Redroot pigweed plant (H. F. Schwartz, Colorado State University)


tn_1111070.JPG 





Redroot_pigweed_plant_and_seed

Redroot pigweed plant and seed (G. Y. Frissoe, Colorado State University)


tn_1111071.JPG 





Redstem_filaree_(Erodium_cicutarium)

Redstem filaree (Erodium cicutarium)


tn_USDAW060.JPG 





Redstem_filaree_in_onion

Redstem filaree in onion (H. F. Schwartz, Colorado State University)


tn_1413095.JPG 





redvine_(Brunnichia_cirrhosa)

redvine (Brunnichia cirrhosa)


tn_USDAW101.JPG 





Ridolfia_segetum_Moris.

Ridolfia segetum Moris. (FNE)


tn_FAONE212.JPG 





Rose,_wild_(Rosa_multiflora)

Rose, wild (Rosa multiflora); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_12A.JPG 





Rottboellia_cochinchinensis

Rottboellia cochinchinensis (FAO_MTG)


tn_FAOM02D.JPG 





Rough_pigweed_seeds

Rough pigweed seeds (H. F. Schwartz, Colorado State University)


tn_1225061.JPG 





Russian_Knapweed

Russian Knapweed (H. F. Schwartz, Colorado State University)


tn_4036040.JPG 





Russian_Knapweed,_7'_deep_root_pit

Russian Knapweed, 7' deep root pit (K. G. Beck, Colorado State University)


tn_0502066.JPG 





Russian_Knapweed,_crown_&_root_section

Russian Knapweed, crown & root section (K. G. Beck, Colorado State University)


tn_0502065.JPG 





Russian_Knapweed,_mature_plant_with_flowers_and_buds

Russian Knapweed, mature plant with flowers and buds (L. L. Berry, Colorado State University)


tn_0100027.JPG 





Russian_Knapweed,_stem_and_leaf_fuzz_or_knap

Russian Knapweed, stem and leaf fuzz or knap (L. L. Berry, Colorado State University)


tn_0100026.JPG 





Russian_Knapweed_buds_in_April

Russian Knapweed buds in April (K. G. Beck, Colorado State University)


tn_0502071.JPG 





Russian_Knapweed_flowering

Russian Knapweed flowering (K. G. Beck, Colorado State University)


tn_0502073.JPG 





Russian_Knapweed_infestation

Russian Knapweed infestation (L. L. Berry, Colorado State University)


tn_0100020.JPG 





Russian_Knapweed_rosette,_vegetative_reproduction

Russian Knapweed rosette, vegetative reproduction (K. G. Beck, Colorado State University)


tn_0502072.JPG 





Russian_Knapweed_rosette_from_root_stock

Russian Knapweed rosette from root stock (L. L. Berry, Colorado State University)


tn_0100024.JPG 





Russian_Knapweed_seedling

Russian Knapweed seedling (L. L. Berry, Colorado State University)


tn_0100025.JPG 





Russian_knapweed_seeds

Russian knapweed seeds (H. F. Schwartz, Colorado State University)


tn_1225064.JPG 





Russian_Olive,_Eleagnus_angustifolia

Russian Olive, Eleagnus angustifolia (L. L. Berry, Colorado State University)


tn_0094012.JPG 





Russian_Thistle_(Tumbleweed)

Russian Thistle (Tumbleweed) (H. F. Schwartz, Colorado State University)


tn_4036014.JPG 





Russian_thistle_flower

Russian thistle flower (P. Westra, Colorado State University)


tn_0746028.JPG 





Russian_thistle_in_dry_beans

Russian thistle in dry beans (H. F. Schwartz, Colorado State University)


tn_0916024.JPG 





Russian_thistle_in_dry_beans

Russian thistle in dry beans (H. F. Schwartz, Colorado State University)


tn_0916025.JPG 





Russian_thistle_in_dry_beans

Russian thistle in dry beans (H. F. Schwartz, Colorado State University)


tn_2219058.JPG 





Russian_thistle_in_onion

Russian thistle in onion (H. F. Schwartz, Colorado State University)


tn_1413092.JPG 





Russian_thistle_plant

Russian thistle plant (G. Y. Frissoe, Colorado State University)


tn_1111075.JPG 





Russian_thistle_seedling

Russian thistle seedling (P. Westra, Colorado State University)


tn_0746026.JPG 





Russian_thistle_seedling

Russian thistle seedling (P. Westra, Colorado State University)


tn_0746027.JPG 





Russian_thistle_seedling

Russian thistle seedling (S. J. Nissen, Colorado State University)


tn_1111074.JPG 





Russian_thistle_seeds

Russian thistle seeds (H. F. Schwartz, Colorado State University)


tn_1225065.JPG 





Russian_wildrye

Russian wildrye (Lair, Colorado State University)


tn_4031033.JPG 





Russian_wildrye_bunches

Russian wildrye bunches (R. F. Jepson, Colorado State University)


tn_4031003.JPG 





Russian_wildrye_spike

Russian wildrye spike (Lair, Colorado State University)


tn_4031031.JPG 





Rye,_feral_(Secale_cereale)

Rye, feral (Secale cereale); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_14A.JPG 





Rye,_feral_(Secale_cereale)

Rye, feral (Secale cereale); flower (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_14F.JPG 





Rye,_feral_(Secale_cereale)

Rye, feral (Secale cereale); seeds (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_14D.JPG 





Rye_in_wheat

Rye in wheat (H. F. Schwartz, Colorado State University)


tn_0203017.JPG 





Rye-grass,_Wymmera

Rye-grass, Wymmera; Lolium rigidurn Gaud.; Shahlah; Wymmera rye-grass (FNE)


tn_FAONE124.JPG 





Sage,_Syrian

Syrian sage; Khw'aikhah; Sage, Syrian; Salvia syriaca L. (FNE)


tn_FAONE138.JPG 





Sage_in_dry_beans

Sage in dry beans (H. F. Schwartz, Colorado State University)


tn_0916013.JPG 





Sagebrush,_big_(Artemisia_tridentata)

Sagebrush, big (Artemisia tridentata); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_13A.JPG 





Sagebrush,_big_(Artemisia_tridentata)

Sagebrush, big (Artemisia tridentata); flower and leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_13LF.JPG 





Sagittaria_pygmaea

Sagittaria pygmaea (FRW)


tn_R17.JPG 





Sagittaria_trifolia

Sagittaria trifolia (FRW)


tn_R16.JPG 





Salsify,_western

Salsify, western (Tragopogon dubius); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_15A.JPG 





Salsify,_western

Salsify, western (Tragopogon dubius); flower/seeds (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_15F.JPG 






Saltcedar_(Tamarix_ramosissima)

Saltcedar (Tamarix ramosissima); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_18A.JPG 





Saltcedar_(Tamarix_ramosissima)

Saltcedar (Tamarix ramosissima); flower (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_18F.JPG 





Saltcedar_(Tamarix_ramosissima)

Saltcedar (Tamarix ramosissima); flower (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_18F2.JPG 





Saltgrass

Saltgrass (Lair, Colorado State University)


tn_4031030.JPG 





Saltgrass_(Distichlis_spicata)

Saltgrass (Distichlis spicata); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_12A.JPG 





Saltgrass_(Distichlis_spicata)

Saltgrass (Distichlis spicata); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_12F.JPG 





Saltgrass_(Distichlis_spicata)

Saltgrass (Distichlis spicata); leaf (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_12L.JPG 





Saltgrass_(Distichlis_spicata)

Saltgrass (Distichlis spicata); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_12L2.JPG 





Salvinia_molesta,_closeup_of_plants

Salvinia molesta, closeup of plants (FAO_MTG)


tn_FAOM05C.JPG 





Sand_bluestem_raceme

Sand bluestem raceme (Lair, Colorado State University)


tn_4031015.JPG 





Sandbur

Sandbur (H. F. Schwartz, Colorado State University)


tn_3658015.JPG 





Sandbur

Sandbur (H. F. Schwartz, Colorado State University)


tn_3658017.JPG 





Sandbur

Sandbur (Lair, Colorado State University)


tn_4031036.JPG 





Sandbur_(Cenchrus_incertus)

Sandbur (Cenchrus incertus); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_16A.JPG 





Sandbur_(Cenchrus_incertus)

Sandbur (Cenchrus incertus); flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_16F.JPG 





Sandbur_(Cenchrus_incertus)

Sandbur (Cenchrus incertus); flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_16F2.JPG 





Sandbur_(Cenchrus_incertus)

Sandbur (Cenchrus incertus); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_16S.JPG 





Sandbur_plant,_medium_sized

Sandbur plant, medium sized (P. Westra, Colorado State University)


tn_0104025.JPG 





Sandbur_seedheads

Sandbur seedheads (P. Westra, Colorado State University)


tn_0104027.JPG 





Sandbur_seedheads

Sandbur seedheads (P. Westra, Colorado State University)


tn_0104028.JPG 





Sandbur_seedling

Sandbur seedling (P. Westra, Colorado State University)


tn_0104023.JPG 





Sandbur_seedling,_medium_sized

Sandbur seedling, medium sized (P. Westra, Colorado State University)


tn_0104024.JPG 





Sandbur_seedlings

Sandbur seedlings (L. L. Berry, Colorado State University)


tn_0100081.JPG 





Sandbur_seeds

Sandbur seeds (H. F. Schwartz, Colorado State University)


tn_1225066.JPG 





Sandbur_seeds

Sandbur seeds (L. L. Berry, Colorado State University)


tn_0100082.JPG 





Sandbur_weed

Sandbur weed (H. F. Schwartz, Colorado State University)


tn_0239078.JPG 





Sandbur_with_purple_color_at_base_of_plant

Sandbur with purple color at base of plant (L. L. Berry, Colorado State University)


tn_0100080.JPG 





Scarlet_Globe_Mallow

Scarlet Globe Mallow (G. Y. Frissoe, Colorado State University)


tn_1112068.JPG 





Scarlet_Globe_Mallow

Scarlet Globe Mallow (S. J. Nissen, Colorado State University)


tn_1112069.JPG 





Scarlet_Globe_Mallow

Scarlet Globe Mallow (S. J. Nissen, Colorado State University)


tn_1112070.JPG 





Scarlet_Globe_Mallow

Scarlet Globe Mallow (S. J. Nissen, Colorado State University)


tn_1112071.JPG 





Scarlet_Globe_Mallow

Scarlet Globe Mallow (S. J. Nissen, Colorado State University)


tn_1112072.JPG 





Scarlet_Globe_Mallow

Scarlet Globe Mallow (S. J. Nissen, Colorado State University)


tn_1112073.JPG 





Scirpus_juncoides

Scirpus juncoides (FRW)


tn_R22.JPG 





Scirpus_maritimus

Scirpus maritimus (FRW)


tn_R12.JPG 





Scotch_Thistle

Scotch Thistle (L. L. Berry, Colorado State University)


tn_0100060.JPG 





Scotch_Thistle

Scotch Thistle (L. L. Berry, Colorado State University)


tn_0100100.JPG 





Scotch_Thistle_flower_and_bud

Scotch Thistle flower and bud (L. L. Berry, Colorado State University)


tn_0100061.JPG 





Scouringrush_(Equisetum_hyemale)

Scouringrush (Equisetum hyemale); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_13A.JPG 





Scouringrush_(Equisetum_hyemale)

Scouringrush (Equisetum hyemale); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_13F.JPG 





Scouringrush_(Equisetum_hyemale)

Scouringrush (Equisetum hyemale); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_13F2.JPG 





Scouringrush_(Equisetum_hyemale)

Scouringrush (Equisetum hyemale); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_13S.JPG 





Sea_beet

Sea beet; Beta vulgaris L.; Salq (FNE)


tn_FAONE042.JPG 





Sedge_seed_head

Sedge seed head (Lair, Colorado State University)


tn_4031009.JPG 





Setaria_faberi_giant_foxtail

Setaria faberi giant foxtail (infested field)


tn_SOY108.JPG 





Setaria_spp._Foxtail

Setaria spp. Foxtail (panicles)


tn_SOY107.JPG 





Shattercane

Shattercane (H. F. Schwartz, Colorado State University)


tn_4036048.JPG 





Shattercane_in_corn

Shattercane in corn (P. Westra, Colorado State University)


tn_0104020.JPG 





Shattercane_in_corn

Shattercane in corn (P. Westra, Colorado State University)


tn_0104021.JPG 





Shattercane_plant

Shattercane plant (H. F. Schwartz, Colorado State University)


tn_1111084.JPG 





Shattercane_seed_head

Shattercane seed head (P. Westra, Colorado State University)


tn_0104022.JPG 





Shepherd's_purse_in_flower

Shepherd's purse in flower (P. Westra, Colorado State University)


tn_0746084.JPG 





Shepherds_needle

Shepherds needle; Musht el Ra'ey; Scandix brachycarpa Guss.; Scandix hispanica Boiss.; Scandix macrorhyncha C.A.Meyer; Scandix pecten-veneris L. (FNE)


tn_FAONE214.JPG 





Shepherd's_purse_(Capsella_bursa-pastoris)

Shepherd's purse (Capsella bursa-pastoris); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_17A.JPG 





Shepherd's_purse_(Capsella_bursa-pastoris)

Shepherd's purse (Capsella bursa-pastoris); flower and fruit (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_17F.JPG 





Shepherd's_purse_(Capsella_bursa-pastoris)

Shepherd's purse (Capsella bursa-pastoris); fruit (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_17F2.JPG 





Shepherd's_purse_(Capsella_bursa-pastoris)

Shepherd's purse (Capsella bursa-pastoris); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_17S.JPG 





Shepherd's_purse_(Cruciferae,_Capsella_bursa-pastoris_L._Medic.)

Shepherd's purse (Cruciferae, Capsella bursa-pastoris (L.)Medic.)(FAW) )


tn_FAOW021A.JPG 

(Drawing)


tn_FAOW021D.JPG 





Shepherd's_purse_1

Shepherd's purse; Capsella bursa-pastoris (L.)Medik.; Kees erradi; Shantet erradi (FNE)


tn_FAONE076.JPG 





Shepherd's_purse_2

Shepherd's purse; Capsella bursa-pastoris (L.)Medik.; Kees erradi; Shantet erradi (FNE)


tn_FAONE077.JPG 






shepherdspurse_(Capsella_bursa-pastoris)

shepherdspurse (Capsella bursa-pastoris)


tn_USDAW048.JPG 





showy_crotalaria_(Crotalaria_spectabilis)

showy crotalaria (Crotalaria spectabilis)


tn_USDAW082.JPG 





Showy_milkweed,_Asclepias_speciosa

Showy milkweed adult, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_07A.JPG 





Showy_milkweed,_Asclepias_speciosa

Showy milkweed flower, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_07F.JPG 





Showy_milkweed,_Asclepias_speciosa

Showy milkweed fruit/seeds, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_07F3.JPG 





Showy_milkweed,_Asclepias_speciosa

Showy milkweed flower, Asclepias speciosa (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_07F2.JPG 





sicklepod_(Cassia_obtusifolia)

sicklepod (Cassia obtusifolia)


tn_USDAW081.JPG 





Sideoats_grama

Sideoats grama (Lair, Colorado State University)


tn_4031018.JPG 





Sideoats_grama

Sideoats grama (Lair, Colorado State University)


tn_4031019.JPG 





Sideoats_grama_spike

Sideoats grama spike (Lair, Colorado State University)


tn_4031011.JPG 





Silver_Sage,_Artemisia_frigida

Silver Sage, Artemisia frigida (L. L. Berry, Colorado State University)


tn_0094032.JPG 





Silverleaf_nightshade_(Solanum_elaeagnifolium)

silverleaf nightshade (Solanum elaeagnifolium)


tn_USDAW115.JPG 





Skeletonleaf_Bursage

Skeletonleaf Bursage (L. L. Berry, Colorado State University)


tn_0100089.JPG 





Skeletonleaf_Bursage_root_system

Skeletonleaf Bursage root system (L. L. Berry, Colorado State University)


tn_0100090.JPG 





Skeletonleaf_seed_head

Skeletonleaf seed head (L. L. Berry, Colorado State University)


tn_0100092.JPG 





Skeletonleaf_seedling

Skeletonleaf seedling (L. L. Berry, Colorado State University)


tn_0100091.JPG 





Skeletonweed,_rush_(Chondrilla_juncea)

Skeletonweed, rush (Chondrilla juncea); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_14A.JPG 





Skeletonweed,_rush_(Chondrilla_juncea)

Skeletonweed, rush (Chondrilla juncea); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_14A2.JPG 





Smallflower_morningglory_(Jaquemontia_tamnifolia)

Smallflower morningglory (Jaquemontia tamnifolia)


tn_USDAW046.JPG 





Smooth_brome

Smooth brome (Lair, Colorado State University)


tn_4031039.JPG 





Smooth_brome_ligule

Smooth brome ligule (R. F. Jepson, Colorado State University)


tn_4031061.JPG 





Smooth_brome_panicle

Smooth brome panicle (Lair, Colorado State University)


tn_4031038.JPG 





Smooth_brome_rhizome

Smooth brome rhizome (R. F. Jepson, Colorado State University)


tn_4031060.JPG 





Smooth_groundcherry

Smooth groundcherry (G. Y. Frissoe, Colorado State University)


tn_1112065.JPG 





Smooth_groundcherry_(Physalis_subglabrata)

Smooth groundcherry (Physalis subglabrata)


tn_USDAW113.JPG 





Smooth_pigweed_(Amaranthaceae,_Amaranthus_hybridus_L.)

Smooth pigweed (Amaranthaceae, Amaranthus hybridus L.)(FAW) )


tn_FAOW003A.JPG 

(Drawing)


tn_FAOW003D.JPG 





Snakeweed,_broom_(Gutierrezia_sarothrae)

Snakeweed, broom (Gutierrezia sarothrae); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_15A.JPG 





Sodon_apple_(Sol_anaceae,_Solanum_incanum_L.)

Sodon apple (Sol anaceae, Solanum incanum L.)(FAW) )


tn_FAOW060A.JPG 

(Drawing)


tn_FAOW060D.JPG 





Solanum_ptycanthum;_black_nightshade

Solanum ptycanthum; black nightshade (seedling)


tn_SOY123.JPG 





Solanum_ptycanthum;_black_nightshade

Solanum ptycanthum; black nightshade (fully grown plant)


tn_SOY124.JPG 





Sorghum_halepense,_shoot_base_and_young_rhizome

Sorghum halepense, shoot base and young rhizome (FAO_MTG)


tn_FAOM03A.JPG 





Sow_thistle_(Compositae,_Sonchus_oleraceus_L.)

Sow thistle (Compositae, Sonchus oleraceus L.)(FAW) )


tn_FAOW018A.JPG 

(Drawing)


tn_FAOW018D.JPG 





Sowthistle,_annual_(Sonchus_oleraceus)

Sowthistle, annual (Sonchus oleraceus); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_17A.JPG 





Sowthistle,_annual_(Sonchus_oleraceus)

Sowthistle, annual (Sonchus oleraceus); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_17F.JPG 





Sowthistle,_annual_(Sonchus_oleraceus)

Sowthistle, annual (Sonchus oleraceus); flower and seeds (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_17F2.JPG 





Sowthistle,_annual_(Sonchus_oleraceus)

Sowthistle, annual (Sonchus oleraceus); flower and leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_17LF.JPG 





Sowthistle,_perennial_(Sonchus_arvensis)

Sowthistle, perennial (Sonchus arvensis); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_18A.JPG 





Sowthistle,_perennial_(Sonchus_arvensis)

Sowthistle, perennial (Sonchus arvensis); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_18F.JPG 





Sowthistle,_perennial_(Sonchus_arvensis)

Sowthistle, perennial (Sonchus arvensis); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_18F2.JPG 





Sowthistle,_perennial_(Sonchus_arvensis)

Sowthistle, perennial (Sonchus arvensis); roots and leaf (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_18RL.JPG 





sowthistle_(Sonchus_sp.)_

sowthistle (Sonchus sp.)


tn_USDAW037.JPG 





Spanish_needles_(Bidens_bipinnata)

Spanish needles (Bidens bipinnata)


tn_USDAW022.JPG 





Speedwell,_bilobed_(Veronica_biloba)

Speedwell, bilobed (Veronica biloba); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_16A.JPG 





Speedwell,_bilobed_(Veronica_biloba)

Speedwell, bilobed (Veronica biloba); flower and leaf (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_16FL.JPG 





Speedwell,_white

Speedwell, white; Veronica cymbalaria Bodard; Veronica polita Fries.; White speedwell (FNE)


tn_FAONE204.JPG 





Sphenoclea_zeylanica

Sphenoclea zeylanica (FRW)


tn_R04.JPG 





Spider_flower_(Capparaceae,_Gynandropsis_gynandra_L._Briq.)

Spider flower (Capparaceae, Gynandropsis gynandra (L.)Briq.)(FAW) )


tn_FAOW005A.JPG 

(Drawing)


tn_FAOW005D.JPG 





spiny_amarnth_(Amaranthus_spinosus)

spiny amarnth (Amaranthus spinosus)


tn_USDAW003.JPG 





Spotted_Knapweed

Spotted Knapweed (H. F. Schwartz, Colorado State University)


tn_4036041.JPG 





Spotted_Knapweed

Spotted Knapweed (K. G. Beck, Colorado State University)


tn_0502074.JPG 





Spotted_Knapweed

Spotted Knapweed (L. L. Berry, Colorado State University)


tn_0094062.JPG 





Spotted_Knapweed

Spotted Knapweed (L. L. Berry, Colorado State University)


tn_0100028.JPG 





Spotted_Knapweed

Spotted Knapweed (L. L. Berry, Colorado State University)


tn_0100029.JPG 





Spotted_Knapweed

Spotted Knapweed (L. L. Berry, Colorado State University)


tn_0100030.JPG 





Spotted_Knapweed_flowers

Spotted Knapweed flowers (K. G. Beck, Colorado State University)


tn_0502076.JPG 





Spotted_Knapweed_infestation_and_alleopathic_effects

Spotted Knapweed infestation and alleopathic effects (L. L. Berry, Colorado State University)


tn_0100037.JPG 





Spotted_Knapweed_rosette

Spotted Knapweed rosette (L. L. Berry, Colorado State University)


tn_0100032.JPG 





Spotted_Knapweed_seed_head_with_black_bracts

Spotted Knapweed seed head with black bracts (L. L. Berry, Colorado State University)


tn_0100031.JPG 





spotted_spurge_(Euphorbia_maculata)

spotted spurge (Euphorbia maculata)


tn_USDAW059.JPG 





Spurge,_blue_(Euphorbia_myrsinites)

Spurge, blue (Euphorbia myrsinites); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_19A.JPG 





Spurge,_blue_(Euphorbia_myrsinites)

Spurge, blue (Euphorbia myrsinites); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_19F.JPG 





Spurge,_blue_(Euphorbia_myrsinites)

Spurge, blue (Euphorbia myrsinites); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_19F2.JPG 





Spurge,_leafy_(Euphorbia_esula)

Spurge, leafy (Euphorbia esula); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_19A.JPG 





Spurge,_leafy_(Euphorbia_esula)

Spurge, leafy (Euphorbia esula); fruit and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_19FL.JPG 





Spurge,_leafy_(Euphorbia_esula)

Spurge, leafy (Euphorbia esula); flower and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_19FL2.JPG 





Spurge,_leafy_(Euphorbia_esula)

Spurge, leafy (Euphorbia esula); flower and leaf (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_19FL3.JPG 





Spurge,_petty

Petty spurge; Anagallis caerulea Schreber; Euphorbia peplus L.; Ma'alakah; Spurge, petty (FNE)


tn_FAONE102.JPG 





Spurge,_prostrate_(Euphorbia_spp.)

Spurge, prostrate (Euphorbia spp.); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_17A.JPG 





Spurge,_prostrate_(Euphorbia_spp.)

Spurge, prostrate (Euphorbia spp.); leaf (Turf) (Steven Dewey, Utah State University)


tn_L1_17L.JPG 





Spurge,_prostrate_(Euphorbia_spp.)

Spurge, prostrate (Euphorbia spp.); seedling (Turf) (Steven Dewey, Utah State University)


tn_L1_17S.JPG 





Spurge,_prostrate_(Euphorbia_spp.)

Spurge, prostrate (Euphorbia spp.); seedling (Turf) (Steven Dewey, Utah State University)


tn_L1_17S2.JPG 





Spurge,_sun

Sun spurge; A'dah; Elbena; Euphorbia helioscopia L.; Libbein; Spurge, sun (FNE)


tn_FAONE100.JPG 





Spurge,_toothed_(Euphorbia_dentata)

Spurge, toothed (Euphorbia dentata); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_18A.JPG 





Spurge,_toothed_(Euphorbia_dentata)

Spurge, toothed (Euphorbia dentata); flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_18F.JPG 





Spurge,_toothed_(Euphorbia_dentata)

Spurge, toothed (Euphorbia dentata); leaf (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_18L.JPG 





Spurge,_toothed_(Euphorbia_dentata)

Spurge, toothed (Euphorbia dentata); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_18S.JPG 





Spurred_Anoda

Spurred Anoda (H. F. Schwartz, Colorado State University)


tn_4036015.JPG 





Spurred_anoda_seed_capsule

Spurred anoda seed capsule (P. Westra, Colorado State University)


tn_0746052.JPG 





Spurred_anoda_seedlings_and_cotyledons

Spurred anoda seedlings and cotyledons (P. Westra, Colorado State University)


tn_0746049.JPG 





Spurred_anoda_seedlings_and_cotyledons

Spurred anoda seedlings and cotyledons (P. Westra, Colorado State University)


tn_0746050.JPG 





Spurred_anoda_with_flower

Spurred anoda with flower (P. Westra, Colorado State University)


tn_0746051.JPG 





Spurrey_(Caryophyllaceae,_Spergula_arvensis_L.)

Spurrey (Caryophyllaceae, Spergula arvensis L.)(FAW) )


tn_FAOW006A.JPG 

(Drawing)


tn_FAOW006D.JPG 





Squirreltail

Squirreltail (Lair, Colorado State University)


tn_4031044.JPG 





St._Johnswort

St. Johnswort (L. L. Berry, Colorado State University)


tn_0100065.JPG 





St._Johnswort

St. Johnswort (L. L. Berry, Colorado State University)


tn_0100066.JPG 





St._Johnswort,_Hypericum_perforatum

St. Johnswort, Hypericum perforatum (L. L. Berry, Colorado State University)


tn_0094020.JPG 





St._Johnswort_(Hypericum_perforatum)

St. Johnswort (Hypericum perforatum); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_16A.JPG 





St._Johnswort_(Hypericum_perforatum)

St. Johnswort (Hypericum perforatum); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_16F.JPG 





St._Johnswort_(Hypericum_perforatum)

St. Johnswort (Hypericum perforatum); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_16F2.JPG 





St._Johnswort_(Hypericum_perforatum)

St. Johnswort (Hypericum perforatum); leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_16L.JPG 





St._Johnswort_flower

St. Johnswort flower (L. L. Berry, Colorado State University)


tn_0100067.JPG 





St._Johnswort_flowers

St. Johnswort flowers (L. L. Berry, Colorado State University)


tn_0094021.JPG 





St._Johnswort_leaves_with_holes

St. Johnswort leaves with holes (L. L. Berry, Colorado State University)


tn_0100068.JPG 





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)


tn_FAONE134.JPG 





Star_grass_(Gramineae,_Cynodon_nlemfuensis_Vanderyst)

Star grass (Gramineae, Cynodon nlemfuensis Vanderyst)(FAW) )


tn_FAOW033A.JPG 

(Drawing)


tn_FAOW033D.JPG 





Starbur_(Compositae,_Acanthospermum_hispidum_DC.)

Starbur (Compositae, Acanthospermum hispidum DC.)(FAW) )


tn_FAOW010A.JPG 

(Drawing)


tn_FAOW010D.JPG 





Starthistle,_yellow_(Centaurea_solstitialis)

Starthistle, yellow (Centaurea solstitialis); adult (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_20A.JPG 





Starthistle,_yellow_(Centaurea_solstitialis)

Starthistle, yellow (Centaurea solstitialis); flower (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_20F.JPG 





Starthistle,_yellow_(Centaurea_solstitialis)

Starthistle, yellow (Centaurea solstitialis); leaf (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_20L.JPG 





Starthistle,_yellow_(Centaurea_solstitialis)

Starthistle, yellow (Centaurea solstitialis); seedling (Wildland/Recreation) (Steven Dewey, Utah State University)


tn_L7_20S.JPG 





Stinkgrass_(Eragrostis_cilianensis)

Stinkgrass (Eragrostis cilianensis); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_19A.JPG 





Stinkgrass_panicle

Stinkgrass panicle (Lair, Colorado State University)


tn_4031013.JPG 





Stonecrop,_Sedum_lanceolaatum

Stonecrop, Sedum lanceolaatum (L. L. Berry, Colorado State University)


tn_0094031.JPG 





Striate_Knotweed

Striate Knotweed (H. F. Schwartz, Colorado State University)


tn_4036032.JPG 





Striated_knotweed_plant

Striated knotweed plant (G. Y. Frissoe, Colorado State University)


tn_1111056.JPG 





Striga/Purple_witchweed_(Scrophulariaceae,_Striga_hermonthica_Del._Benth.)

Striga/Purple witchweed (Scrophulariaceae, Striga hermonthica (Del.)Benth.)(FAW) )


tn_FAOW056A.JPG 

(Drawing)


tn_FAOW056D.JPG 





Striga/Red_witchweed_(Scrophulariaceae,_Striga_asiatica_L._Kuntze)

Striga/Red witchweed (Scrophulariaceae, Striga asiatica (L.)Kuntze)(FAW) )


tn_FAOW055A.JPG 

(Drawing)


tn_FAOW055D.JPG 





Striga_asiatica

Striga asiatica (FAO_MTG)


tn_FAOM08C.JPG 





Striga_aspera

Striga aspera (FAO_MTG)


tn_FAOM08B.JPG 





Striga_gesnerioides

Striga gesnerioides (FAO_MTG)


tn_FAOM08D.JPG 





Striga_hermonthica

Striga hermonthica (FAO_MTG)


tn_FAOM08A.JPG 





Sudangrass_seeds

Sudangrass seeds (H. F. Schwartz, Colorado State University)


tn_1225067.JPG 





Sunflower,_wild_(Helianthus_annuus)

Sunflower, wild (Helianthus annuus); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_17A.JPG 





Sunflower,_wild_(Helianthus_annuus)

Sunflower, wild (Helianthus annuus); flower and leaf (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_17FL.JPG 





Sunflower,_wild_(Helianthus_annuus)

Sunflower, wild (Helianthus annuus); seedling (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_17S.JPG 





Sunflower,_wild_(Helianthus_annuus)

Sunflower, wild (Helianthus annuus); stem (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_17T.JPG 





Sweetclover_(Melilotus_spp.)

Sweetclover (Melilotus spp.); [sweetclover - left; alfalfa - right] leaf (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_15L.JPG 





Sweetclover_(Melilotus_spp.)

Sweetclover (Melilotus spp.); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_15A.JPG 





Sweetclover_(Melilotus_spp.)

Sweetclover (Melilotus spp.); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_15F.JPG 





Sweetclover_(Melilotus_spp.)

Sweetclover (Melilotus spp.); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_15S.JPG 





Swinecress_(Coronopus_didymus)

Swinecress (Coronopus didymus)


tn_USDAW049.JPG 





Switch_grass

Switch grass (H. F. Schwartz, Colorado State University)


tn_2223005.JPG 





Switch_grass

Switch grass (H. F. Schwartz, Colorado State University)


tn_2223006.JPG 





Switchgrass

Switchgrass (Lair, Colorado State University)


tn_4031016.JPG 





Switchgrass_panicle

Switchgrass panicle (Lair, Colorado State University)


tn_4031017.JPG 





Sword_grass

Sword grass; Alang-alang; Imperata cylindrica (L.)Raeusch. (FNE)


tn_FAONE122.JPG 





Swordgrass_(Gramineae,_Imperata_cylindrica_L._Raeuschel)

Swordgrass (Gramineae, Imperata cylindrica (L.)Raeuschel)(FAW) )


tn_FAOW039A.JPG 

(Drawing)


tn_FAOW039D.JPG 





Syrian_scabious

Syrian scabious; Cephalaria syr/aca (L.)Schrad.; Scabius, Syrian; Tardan; Ziwan (FNE)


tn_FAONE096.JPG 





Tall_fescue_patches_in_irrigated_pasture

Tall fescue patches in irrigated pasture (R. F. Jepson, Colorado State University)


tn_4031059.JPG 





Tall_khaki_weed_/Mexican_marigold(Compositae,_Tagetes_minuta_L.)

Tall khaki weed/Mexican marigold (Compositae, Tagetes minuta L. (FAW) )


tn_FAOW020A.JPG 

(Drawing)


tn_FAOW020D.JPG 





Tall_larkspur_(Delphinium_spp.)

Tall larkspur (Delphinium spp.); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_08A.JPG 





Tall_larkspur_(Delphinium_spp.)

Tall larkspur (Delphinium spp.); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_08F.JPG 





Tall_morningglory_(Ipomoea_purpurea)

Tall morningglory (Ipomoea purpurea)


tn_USDAW044.JPG 





Tall_wheatgrass_spikelets

Tall wheatgrass spikelets (Lair, Colorado State University)


tn_4031012.JPG 





Tansy,_common_(Tanacetum_vulgare)

Tansy, common (Tanacetum vulgare); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_17A.JPG 





Tansy,_common_(Tanacetum_vulgare)

Tansy, common (Tanacetum vulgare); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_17A2.JPG 





Tansy_Mustard

Tansy Mustard (L. L. Berry, Colorado State University)


tn_0100086.JPG 





Teasel_(Dipsacus_laciniatus)

Teasel (Dipsacus laciniatus); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_16A.JPG 





Teasel_(Dipsacus_laciniatus)

Teasel (Dipsacus laciniatus); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_16F.JPG 





Teasel_(Dipsacus_laciniatus)

Teasel (Dipsacus laciniatus); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_16F2.JPG 





Teasel_(Dipsacus_laciniatus)

Teasel (Dipsacus laciniatus); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_16S.JPG 





Texas_panicum_(Panicum_texanum)

Texas panicum (Panicum texanum)


tn_USDAW072.JPG 





Thistle,_bull_(Cirsium_vulgare)

Thistle, bull (Cirsium vulgare); [Bull - left; Canada - right] flowers (Turf) (Steven Dewey, Utah State University)


tn_L1_18_BC.JPG 





Thistle,_bull_(Cirsium_vulgare)

Thistle, bull (Cirsium vulgare); flower (Turf) (Steven Dewey, Utah State University)


tn_L1_18F.JPG 





Thistle,_bull_(Cirsium_vulgare)

Thistle, bull (Cirsium vulgare); leaf (Turf) (Steven Dewey, Utah State University)


tn_L1_18L.JPG 





Thistle,_bull_(Cirsium_vulgare)

Thistle, bull (Cirsium vulgare); rosettes (Turf) (Steven Dewey, Utah State University)


tn_L1_18X.JPG 





Thistle,_Canada_(Cirsium_arvense)

Thistle, Canada (Cirsium arvense); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_18A.JPG 





Thistle,_Canada_(Cirsium_arvense)

Thistle, Canada (Cirsium arvense); flower (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_18F.JPG 





Thistle,_Canada_(Cirsium_arvense)

Thistle, Canada (Cirsium arvense); seedling (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_18S2.JPG 





Thistle,_Canada_(Cirsium_arvense)

Thistle, Canada (Cirsium arvense); seedling and roots (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_18SR.JPG 





Thistle,_musk_(Carduus_nutans)

Thistle, musk (Carduus nutans); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_17A.JPG 





Thistle,_musk_(Carduus_nutans)

Thistle, musk (Carduus nutans); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_17F.JPG 





Thistle,_musk_(Carduus_nutans)

thistle, musk (Carduus nutans); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_17F2.JPG 





Thistle,_musk_(Carduus_nutans)

Thistle, musk (Carduus nutans); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_17S.JPG 





Thistle,_pale_star_1

Pale star thistle; Centaurea pallescens Del.; Murrar; Thistle, pale star (FNE)


tn_FAONE052.JPG 





Thistle,_pale_star_2

Pale star thistle; Centaurea pallescens Del.; Murrar; Thistle, pale star (FNE)


tn_FAONE053.JPG 





Thistle,_Russian_(Salsola_iberica)

Thistle, Russian (Salsola iberica); adult (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_19A.JPG 





Thistle,_Russian_(Salsola_iberica)

Thistle, Russian (Salsola iberica); flower (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_19F.JPG 





Thistle,_Russian_(Salsola_iberica)

Thistle, Russian (Salsola iberica); flower and leaf (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_19LF.JPG 





Thistle,_Russian_(Salsola_iberica)

Thistle, Russian (Salsola iberica); seedling and roots (Dryland Crops) (Steven Dewey, Utah State University)


tn_L4_19SR.JPG 





Thistle,_Scotch_(Onopordum_acanthium)

Thistle, Scotch (Onopordum acanthium); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_18A.JPG 





Thistle,_Scotch_(Onopordum_acanthium)

Thistle, Scotch (Onopordum acanthium); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_18F.JPG 





Thistle,_Scotch_(Onopordum_acanthium)

Thistle, Scotch (Onopordum acanthium); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_18S.JPG 





Thistle,_sow

Sow thistle; Go'odeid; Hawa; Khas klab; Sonchus oleraceus L.; Thistle, sow (FNE)


tn_FAONE060.JPG 





Thistle_head

Thistle head (H. F. Schwartz, Colorado State University)


tn_2223054.JPG 





Thorn_apple_(Sol_anaceae,_Datura_stramonium_L.)

Thorn apple (Sol anaceae, Datura stramonium L.)(FAW) )


tn_FAOW057A.JPG 

(Drawing)


tn_FAOW057D.JPG 





Three-awn

Three-awn (Lair, Colorado State University)


tn_4031046.JPG 





Three-awn_flowering_head

Three-awn flowering head (Lair, Colorado State University)


tn_4031045.JPG 





Timothy_flowering_head

Timothy flowering head (Lair, Colorado State University)


tn_4031014.JPG 





Toadflax,_dalmation_(Linaria_dalmatica)

Toadflax, dalmation (Linaria dalmatica); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_18A.JPG 





Toadflax,_dalmation_(Linaria_dalmatica)

Toadflax, dalmation (Linaria dalmatica); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_18A2.JPG 





Toadflax,_dalmation_(Linaria_dalmatica)

Toadflax, dalmation (Linaria dalmatica); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_18F.JPG 





Toadflax,_dalmation_(Linaria_dalmatica)

Toadflax, dalmation (Linaria dalmatica); leaf (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_18L.JPG 





Toadflax,_yellow_(Linaria_vulgaris)

Toadflax, yellow (Linaria vulgaris); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_19A.JPG 





Toadflax,_yellow_(Linaria_vulgaris)

Toadflax, yellow (Linaria vulgaris); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_19A2.JPG 





Toadflax,_yellow_(Linaria_vulgaris)

Toadflax, yellow (Linaria vulgaris); adult (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_19A3.JPG 





Toadflax,_yellow_(Linaria_vulgaris)

Toadflax, yellow (Linaria vulgaris); flower (Pasture/Rangeland) (Steven Dewey, Utah State University)


tn_L5_19F.JPG 





Toothed_leaf_spurge_plant

Toothed leaf spurge plant (H. F. Schwartz, Colorado State University)


tn_1111076.JPG 





Toothed_Spurge

Toothed Spurge (H. F. Schwartz, Colorado State University)


tn_4036017.JPG 





Toothed_spurge,_2-leaf_stage_+_cotyledon

Toothed spurge, 2-leaf stage + cotyledon (P. Westra, Colorado State University)


tn_0746034.JPG 





Toothed_spurge,_flower_and_seed_pod

Toothed spurge, flower and seed pod (P. Westra, Colorado State University)


tn_0746036.JPG 





Toothed_spurge,_medium_size

Toothed spurge, medium size (P. Westra, Colorado State University)


tn_0746035.JPG 





Toothed_spurge_+_onion

Toothed spurge + onion (H. F. Schwartz, Colorado State University)


tn_3657098.JPG 





Toothed_spurge_in_dry_beans

Toothed spurge in dry beans (H. F. Schwartz, Colorado State University)


tn_0916014.JPG 





Toothed_spurge_in_dry_beans

Toothed spurge in dry beans (H. F. Schwartz, Colorado State University)


tn_0916015.JPG 





Toothed_spurge_rust

Toothed spurge rust (H. F. Schwartz, Colorado State University)


tn_1783072.JPG 





Toothed_spurge_seedling

Toothed spurge seedling (P. Westra, Colorado State University)


tn_0746033.JPG 





Torpedograss_(Panicum_repens)

Torpedograss (Panicum repens)


tn_USDAW071.JPG 





Tropic_croton_(Croton_glandulosus)

Tropic croton (Croton glandulosus)


tn_USDAW058.JPG 





Trumpetcreeper_(Campsis_radicans)

Trumpetcreeper (Campsis radicans)


tn_USDAW008.JPG 





Tumble_pigweed_+_onion

Tumble pigweed + onion (H. F. Schwartz, Colorado State University)


tn_3658009.JPG 





Vaseygrass_(Paspalum_urvillei)

Vaseygrass (Paspalum urvillei)


tn_USDAW073.JPG 





Velvetleaf

Velvetleaf (H. F. Schwartz, Colorado State University)


tn_4036018.JPG 





Velvetleaf_&_pigweed_in_bean_field

Velvetleaf & pigweed in bean field (H. F. Schwartz, Colorado State University)


tn_1115052.JPG 





Velvetleaf_(Abutilon_theophrasti)

Velvetleaf (Abutilon theophrasti); adult (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_20A.JPG 





Velvetleaf_(Abutilon_theophrasti)

Velvetleaf (Abutilon theophrasti); flower (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_20F.JPG 





Velvetleaf_(Abutilon_theophrasti)

Velvetleaf (Abutilon theophrasti); fruit (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_20F2.JPG 





Velvetleaf_(Abutilon_theophrasti)

Velvetleaf (Abutilon theophrasti); seedling (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_20S.JPG 





Velvetleaf_+_onion

Velvetleaf + onion (H. F. Schwartz, Colorado State University)


tn_3657094.JPG 





Velvetleaf_in_bean_field

Velvetleaf in bean field (H. F. Schwartz, Colorado State University)


tn_1115053.JPG 





Velvetleaf_in_large_corn

Velvetleaf in large corn (P. Westra, Colorado State University)


tn_0746042.JPG 





Velvetleaf_in_waste_area_in_Morgan_County

Velvetleaf in waste area in Morgan County (P. Westra, Colorado State University)


tn_0746043.JPG 





Velvetleaf_plant

Velvetleaf plant (P. Westra, Colorado State University)


tn_0746041.JPG 





Velvetleaf_plant_and_seed_capsule

Velvetleaf plant and seed capsule (G. Y. Frissoe, Colorado State University)


tn_1111080.JPG 





Velvetleaf_plants_in_small_corn

Velvetleaf plants in small corn (P. Westra, Colorado State University)


tn_0746040.JPG 





Velvetleaf_seed_capsule

Velvetleaf seed capsule (P. Westra, Colorado State University)


tn_0746044.JPG 





Velvetleaf_seedling

Velvetleaf seedling (G. Y. Frissoe, Colorado State University)


tn_1111079.JPG 





Velvetleaf_seedling

Velvetleaf seedling (P. Westra, Colorado State University)


tn_0746039.JPG 





Venice_Mallow

Venice Mallow (H. F. Schwartz, Colorado State University)


tn_4036007.JPG 





Venice_mallow,_Hibiscus_trionum

Venice mallow adult, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_08A.JPG 





Venice_mallow,_Hibiscus_trionum

Venice mallow leaf, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_08L.JPG 





Venice_mallow,_Hibiscus_trionum

Venice mallow fruit and seeds, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_08FD.JPG 





Venice_mallow_+_onion

Venice mallow + onion (H. F. Schwartz, Colorado State University)


tn_3658004.JPG 





Venice_mallow_flower

Venice mallow flower (P. Westra, Colorado State University)


tn_0746048.JPG 





Venice_mallow_plant

Venice mallow plant (P. Westra, Colorado State University)


tn_0746047.JPG 





Venice_mallow_seedling

Venice mallow seedling (P. Westra, Colorado State University)


tn_0746045.JPG 





Venice_mallow_seedlings_in_onion_field

Venice mallow seedlings in onion field (P. Westra, Colorado State University)


tn_0746046.JPG 





Venive_mallow,_Hibiscus_trionum

Venice mallow flower, Hibiscus trionum (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_08F.JPG 





Vetch,_broad-leaved

Broad-leaved vetch ; Vetch, broad-leaved; Vicia narbonensis L.; Vicia serratifolia Jacq. (FNE)


tn_FAONE152.JPG 





Violet,_English_(Viola_odorata)

Violet, English (Viola odorata); adult (Turf) (Steven Dewey, Utah State University)


tn_L1_19A.JPG 





Virginia_copperleaf_(Acalypha_virginica)

Virginia copperleaf (Acalypha virginica)


tn_USDAW056.JPG 





Virginia_Ground_Cherry

Virginia Ground Cherry (H. F. Schwartz, Colorado State University)


tn_4036013.JPG 





Virginia_pepperweed_(Lepidium_virginicum)

Virginia pepperweed (Lepidium virginicum)


tn_USDAW050.JPG 





Volunteer_corn_in_dry_beans

Volunteer corn in dry beans (H. F. Schwartz, Colorado State University)


tn_2219059.JPG 





Volunteer_Field_Corn

Volunteer Field Corn (H. F. Schwartz, Colorado State University)


tn_4036052.JPG 





Volunteer_Rye

Volunteer Rye (H. F. Schwartz, Colorado State University)


tn_4036053.JPG 





Volunteer_rye

Volunteer rye (P. Westra, Colorado State University)


tn_0104034.JPG 





Volunteer_rye_in_wheat

Volunteer rye in wheat (P. Westra, Colorado State University)


tn_0104038.JPG 





Volunteer_rye_in_wheat

Volunteer rye in wheat (P. Westra, Colorado State University)


tn_0104037.JPG 





Volunteer_rye_overtops_wheat

Volunteer rye overtops wheat (P. Westra, Colorado State University)


tn_0104036.JPG 





Volunteer_rye_seed

Volunteer rye seed (P. Westra, Colorado State University)


tn_0104040.JPG 





Volunteer_rye_seedlings

Volunteer rye seedlings (P. Westra, Colorado State University)


tn_0104035.JPG 





Volunteer_rye-wheat_competition

Volunteer rye-wheat competition (P. Westra, Colorado State University)


tn_0104039.JPG 





Wandering_jew_(Commelinaceae,_Commehna_benghalensis_L.)

Wandering jew (Commelinaceae, Commehna benghalensis L.)(FAW) )


tn_FAOW009A.JPG 

(Drawing)


tn_FAOW009D.JPG 





Warm-season_bunchgrasses

Warm-season bunchgrasses (R. F. Jepson, Colorado State University)


tn_4031055.JPG 





Watergrass_(Cyperaceae,_Cyperus_blysmoides_C.B._CI.)

Watergrass (Cyperaceae, Cyperus blysmoides C.B. CI.)(FAW) )


tn_FAOW024A.JPG 

(Drawing)


tn_FAOW024D.JPG 





Western_Salsify

Western Salsify (H. F. Schwartz, Colorado State University)


tn_4036044.JPG 





Western_Salsify

Western Salsify (H. F. Schwartz, Colorado State University)


tn_0129088.JPG 





Western_salsify_flowers

Western salsify flowers (H. F. Schwartz, Colorado State University)


tn_2223009.JPG 





Western_salsify_flowers

Western salsify flowers (H. F. Schwartz, Colorado State University)


tn_2223010.JPG 





Western_wheatgrass

Western wheatgrass (Lair, Colorado State University)


tn_4031034.JPG 





Western_wheatgrass_(lt)_&_thickspike_wheatgrass_(rt)

Western wheatgrass (lt)& thickspike wheatgrass (rt) (Lair, Colorado State University)


tn_4031051.JPG 





Western_wheatgrass_patch

Western wheatgrass patch (Lair, Colorado State University)


tn_4031025.JPG 





Western_wheatgrass_patch

Western wheatgrass patch (R. F. Jepson, Colorado State University)


tn_4031005.JPG 





Western_wheatgrass_spike

Western wheatgrass spike (Lair, Colorado State University)


tn_4031032.JPG 





White_locoweed

White locoweed (Lair, Colorado State University)


tn_4031053.JPG 





White_Sweetclover,_Melilotus_alba

White Sweetclover, Melilotus alba (L. L. Berry, Colorado State University)


tn_0094004.JPG 





White_top_seeds

White top seeds (H. F. Schwartz, Colorado State University)


tn_1225072.JPG 





White-flowered_field_bindweed

White-flowered field bindweed (P. Westra, Colorado State University)


tn_0746090.JPG 





Whiteheath_aster_(Aster_pilosus)

Whiteheath aster (Aster pilosus)


tn_USDAW021.JPG 





Wild_Buckwheat

Wild Buckwheat (H. F. Schwartz, Colorado State University)


tn_4036025.JPG 





Wild_buckwheat_seedling

Wild buckwheat seedling (P. Westra, Colorado State University)


tn_0746037.JPG 





Wild_buckwheat_seedling

Wild buckwheat seedling (P. Westra, Colorado State University)


tn_0746038.JPG 





Wild_buckwheat_seeds

Wild buckwheat seeds (H. F. Schwartz, Colorado State University)


tn_1225048.JPG 





Wild_carrot

Wild carrot; Daucus carota (L.); Jazarbarri (FNE)


tn_FAONE210.JPG 





Wild_carrot_(Daucus_carota)

wild carrot (Daucus carota)


tn_USDAW117.JPG 





Wild_cucumber_(Echinocystis_lobata)

wild cucumber (Echinocystis lobata)


tn_USDAW052.JPG 





Wild_finger_millet_(Gramineae,_Eleusine_indica_L._Gaertn.)

Wild finger millet (Gramineae, Eleusine indica (L.)Gaertn.)(FAW) )


tn_FAOW037A.JPG 

(Drawing)


tn_FAOW037D.JPG 





Wild_garlic_(Allum_vineale)

wild garlic (Allum vineale)


tn_USDAW087.JPG 





Wild_lettuce_(Compositae,_Launaea_cornuta_Oliv._&_Hiern_C._Jeffrey)

Wild lettuce (Compositae, Launaea cornuta (Oliv. & Hiern)C. Jeffrey)(FAW) )


tn_FAOW016A.JPG 

(Drawing)


tn_FAOW016D.JPG 





Wild_lettuce_(Lactuna_scariola)

wild lettuce (Lactuna scariola)


tn_USDAW033.JPG 





Wild_Mustard

Wild Mustard (H. F. Schwartz, Colorado State University)


tn_4036019.JPG 





Wild_mustard_(Brussica_kaber)

wild mustard (Brussica kaber)


tn_USDAW047.JPG 





Wild_mustard_plant

Wild mustard plant (G. Y. Frissoe, Colorado State University)


tn_1111064.JPG 





Wild_oat_(Gramineae,_Avena_fatua_L.)

Wild_oat (Gramineae, Avena fatua L.)(FAW) )


tn_FAOW030A.JPG 

(Drawing)


tn_FAOW030D.JPG 





Wild_oat_1

Wild oat; Avena fatua; Avena sterilis L; Khafoor; Shofan barri; Snaisleh (FNE)


tn_FAONE108.JPG 





Wild_oat_2

Wild oat; Avena fatua; Avena sterilis L; Khafoor; Shofan barri; Snaisleh (FNE)


tn_FAONE109.JPG 





Wild_oat_diagram

Wild oat diagram (S. J. Nissen, Colorado State University)


tn_1112075.JPG 





Wild_oats_seeds

Wild oats seeds (H. F. Schwartz, Colorado State University)


tn_1225060.JPG 





Wild_Proso_Millet

Wild Proso Millet (H. F. Schwartz, Colorado State University)


tn_4036050.JPG 





Wild_proso_millet,_Panicum_miliaceum

Wild proso millet flower and seeds, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_07F2.JPG 





Wild_proso_millet,_Panicum_miliaceum

Wild proso millet ligule, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_07G.JPG 





Wild_proso_millet,_Panicum_miliaceum

Wild proso millet seedling, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_07S.JPG 





Wild_proso_millet,_Panicum_miliaceum

Wild proso millet flower, Panicum miliaceum (Irrigated Crops) (Steven Dewey, Utah State University)


tn_L3_07F.JPG 





Wild_proso_millet_heading_dates

Wild proso millet heading dates (P. Westra, Colorado State University)


tn_0104019.JPG 





Wild_proso_millet_in_corn

Wild proso millet in corn (P. Westra, Colorado State University)


tn_0104013.JPG 





Wild_proso_millet_infestation_in_corn

Wild proso millet infestation in corn (P. Westra, Colorado State University)


tn_0104014.JPG 





Wild_proso_millet_overgrowing_corn

Wild proso millet overgrowing corn (P. Westra, Colorado State University)


tn_0104016.JPG 





Wild_proso_millet_plants_in_corn

Wild proso millet plants in corn (P. Westra, Colorado State University)


tn_0104018.JPG 





Wild_proso_millet_seeds

Wild proso millet seeds (P. Westra, Colorado State University)


tn_0104010.JPG 





Wild_proso_millet_setting_seed_in_corn

Wild proso millet setting seed in corn (P. Westra, Colorado State University)


tn_0104017.JPG 





Wild_raddish/White_charlock_(Cruciferae,_Raphanus_raphanistrum_L.)

Wild raddish/White charlock (Cruciferae, Raphanus raphanistrum L. (FAW) )


tn_FAOW023A.JPG 

(Drawing)


tn_FAOW023D.JPG 





Wild_rye_in_winter_wheat

Wild rye in winter wheat (H. F. Schwartz, Colorado State University)


tn_0129053.JPG 





Wild_rye_in_winter_wheat

Wild rye in winter wheat (H. F. Schwartz, Colorado State University)


tn_0129054.JPG 





Wild_Sunflower

Wild Sunflower (H. F. Schwartz, Colorado State University)


tn_4036016.JPG 





Wild_sunflower_in_dry_beans

Wild sunflower in dry beans (H. F. Schwartz, Colorado State University)


tn_0916023.JPG 





Wild_sunflower_seeds

Wild sunflower seeds (H. F. Schwartz, Colorado State University)


tn_1225068.JPG 





Wild_sunflowers_in_dry_beans

Wild sunflowers in dry beans (H. F. Schwartz, Colorado State University)


tn_2219057.JPG 





Wild_watermelon_-_citron_(Citrullus_vulgaris)

Wild watermelon - citron (Citrullus vulgaris)


tn_USDAW051.JPG 





Willowweed_(Epilobium_spp.)

Willowweed (Epilobium spp.); flower (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_19F.JPG 





Willowweed_(Epilobium_spp.)

Willowweed (Epilobium spp.); fruit/seed (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_19F2.JPG 





Winged_pea,_Palestine

Palestine winged pea; Pea, winged, Palestine; Saiba'ah; Tetragonolobus palaestinus Boiss.; Tetragonolobus purpureous Moench.; Winged pea, Palestine (FNE)


tn_FAONE150.JPG 





Witchgrass

Witchgrass (Lair, Colorado State University)


tn_4031021.JPG 





Witchgrass_(Panicum_capillare)

Witchgrass (Panicum capillare); adult (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_20A.JPG 





Witchgrass_(Panicum_capillare)

Witchgrass (Panicum capillare); flower (Yard and Garden) (Steven Dewey, Utah State University)


tn_L2_20F.JPG 





Witchweed

Witchweed; Odaar; Striga hermonthica (Del.)Benth. (FNE)


tn_FAONE202.JPG 





witchweed_(Striga_lutea)

witchweed (Striga lutea)


tn_USDAW110.JPG 





Woad,_dyer's_(Isatis_tinctoria)

Woad, dyer's (Isatis tinctoria); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_20A.JPG 





Woad,_dyer's_(Isatis_tinctoria)

Woad, dyer's (Isatis tinctoria); adult (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_20A2.JPG 





Woad,_dyer's_(Isatis_tinctoria)

Woad, dyer's (Isatis tinctoria); flower and fruit (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_20F.JPG 





Woad,_dyer's_(Isatis_tinctoria)

Woad, dyer's (Isatis tinctoria); seedling (Right-of-Way/Noncrop) (Steven Dewey, Utah State University)


tn_L6_20S.JPG 





Wood_sorrel,_yellow

Yellow wood sorrel; Hamd; Hommeid; Oxalis corniculata L.; Oxalis repens Thunb.; Wood sorrel, yellow (FNE)


tn_FAONE170.JPG 





Woodsorrel,_yellow_(Oxalis_stricta)

Woodsorrel, yellow (Oxalis stricta); flower (Turf) (Steven Dewey, Utah State University)


tn_L1_20F.JPG 





Woodsorrel,_yellow_(Oxalis_stricta)

Woodsorrel, yellow (Oxalis stricta); leaf (Turf) (Steven Dewey, Utah State University)


tn_L1_20L.JPG 





Woodsorrel,_yellow_(Oxalis_stricta)

Woodsorrel, yellow (Oxalis stricta); leaf (Turf) (Steven Dewey, Utah State University)


tn_L1_20L2.JPG 





Wooly_croton_(Croton_capitatus)

Wooly croton (Croton capitatus)


tn_USDAW057.JPG 





Xanthium_strumarium_common_cocklebur

Xanthium strumarium common cocklebur (seedling)


tn_SOY128.JPG 





Xanthium_strumarium_common_cocklebur

Xanthium strumarium common cocklebur (infested field)


tn_SOY129.JPG 




Yellow,_green,_and_giant_foxtail_heads

Yellow, green, and giant foxtail heads (P. Westra, Colorado State University)


tn_0104002.JPG 





Yellow_Indiangrass

Yellow Indiangrass (Lair, Colorado State University)


tn_4031052.JPG 





Yellow_nutsedge

Yellow nutsedge (H. F. Schwartz, Colorado State University)


tn_0203034.JPG 





Yellow_nutsedge

Yellow nutsedge (H. F. Schwartz, Colorado State University)


tn_0203035.JPG 





Yellow_nutsedge

Yellow nutsedge (H. F. Schwartz, Colorado State University)


tn_0203036.JPG 





Yellow_nutsedge

Yellow nutsedge (H. F. Schwartz, Colorado State University)


tn_0203038.JPG 





Yellow_nutsedge

Yellow nutsedge (H. F. Schwartz, Colorado State University)


tn_0203039.JPG 





Yellow_nutsedge

Yellow nutsedge (H. F. Schwartz, Colorado State University)


tn_0203040.JPG 





Yellow_nutsedge

Yellow nutsedge (P. Westra, Colorado State University)


tn_0104029.JPG 





Yellow_nutsedge_(Cyperaceae,_Cyperus_esculentus_L.)

Yellow nutsedge (Cyperaceae, Cyperus esculentus L.)(FAW) )


tn_FAOW025A.JPG 

(Drawing)


tn_FAOW025D.JPG 





Yellow_nutsedge_(Cyperus_esculentus)

Yellow nutsedge (Cyperus esculentus)


tn_USDAW054.JPG 





Yellow_nutsedge_in_drybeans

Yellow nutsedge in drybeans (P. Westra, Colorado State University)


tn_0104030.JPG 





Yellow_sweet_clover

Yellow sweet clover (H. F. Schwartz, Colorado State University)


tn_1224004.JPG 





Yellow_Sweetclover,_Melilotus_officinalis

Yellow Sweetclover, Melilotus officinalis (L. L. Berry, Colorado State University)


tn_0094005.JPG 





Yellow_Toadflax

Yellow Toadflax (H. F. Schwartz, Colorado State University)


tn_4036021.JPG 





Yellow_Toadflax

Yellow Toadflax (L. L. Berry, Colorado State University)


tn_0100039.JPG 





Yellow_Toadflax

Yellow Toadflax (L. L. Berry, Colorado State University)


tn_0100041.JPG 





Yellow_Toadflax,_Linaria_vulgaris

Yellow Toadflax, Linaria vulgaris (L. L. Berry, Colorado State University)


tn_0094025.JPG 





Yellow_Toadflax_leaf_shape

Yellow Toadflax leaf shape (K. G. Beck, Colorado State University)


tn_0502092.JPG 





Yellow_Toadflax_with_butter/egg_look_of_flowers

Yellow Toadflax with butter/egg look of flowers (L. L. Berry, Colorado State University)


tn_0100042.JPG 





Yellow_Toadflax_with_root

Yellow Toadflax with root (L. L. Berry, Colorado State University)


tn_0100040.JPG 





Yellow_vetch

Yellow vetch (H. F. Schwartz, Colorado State University)


tn_3658034.JPG 





Yellow_vetchling

Yellow vetchling; Lathyrus aphaca L. (FNE)


tn_FAONE142.JPG 






Yerba-de-tago_(Eclipta_alba)

Yerba-de-tago (Eclipta alba)


tn_USDAW025.JPG