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Acalypha rhomboidea

Common Three-Seed Mercury, Copperleaf, Rhomboid Mercury, Virginia Three-Seed Mercury
Form Form Leaves Leaves Flowers Flowers Stem Stem Leaves in dappled sunlight Leaves in dappled sunlight Leaf close up Leaf close up

Aphanes arvensis

Field Parsley Piert, Parsley Piert, Parsley-piert
Form Form Leaves Leaves Leaves and flowers Leaves and flowers Close up of flower Close up of flower Aphanes arvensis Aphanes arvensis Aphanes arvensis Aphanes arvensis

Capsella bursa-pastoris

Pepper Plant, Pick-pocket, Shepherds-Bag, Shepherd's-Pouch, Shepherd's Purse
Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris Capsella bursa-pastoris
1 Cultivar/Variety

Cardamine hirsuta

Bittercress, Flick Weed, Hairy Bittercress, Hoary Bittercress, Lamb's Cress, Land Cress, Shot Weed, Springcress
Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Cardamine hirsuta Plant Plant

Cerastium glomeratum

Clammy Chickweed, Sticky Chickweed, Sticky Mouse-ear Chickweed
Form Form Flowers Flowers Whole plant Whole plant Stems and leaves Stems and leaves Fruit Fruit

Cerastium holosteoides

Mouseear Chickweed
Cerastium fontanum ssp. vulgare Cerastium fontanum ssp. vulgare Cerastium fontanum ssp. vulgare Cerastium fontanum ssp. vulgare Cerastium fontanum ssp. vulgare Cerastium fontanum ssp. vulgare

Chenopodium album

Baconweed, Bacon Weed, Fat Hen, Frost-blite, Goosefoot, Lambsquarters, Pigweed, White Goosefoot
Chenopodium album Chenopodium album Chenopodium album Chenopodium album Chenopodium album Chenopodium album Chenopodium album Chenopodium album Chenopodium album Chenopodium album flower flower

Crassocephalum crepidioides

Ebolo, Fireweed, Gbolo, Hawksbeard velvetplant, Okinawa Spinach, Redflower Ragleaf, Redflower Ragweed, Thickhead
Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides Crassocephalum crepidioides

Crotalaria spectabilis

Cat's bell, Rattlebox, Rattleweed, Showy Crotalaria, Showy Rattlebox, Showy Rattlepod
Form in bloom (Monroe County, NY)-Early Fall Form in bloom (Monroe County, NY)-Early Fall Stem (Monroe County, NY)-Early Fall Stem (Monroe County, NY)-Early Fall Legumes (Monroe County, NY)-Early Fall Legumes (Monroe County, NY)-Early Fall Back of flower (Monroe County, NY)-Early Fall Back of flower (Monroe County, NY)-Early Fall Yellow flower (Monroe County, NY)-Early Fall Yellow flower (Monroe County, NY)-Early Fall Flower close up Flower close up

Cyclospermum leptophyllum

Fir Leaf Celery, Marsh Parsley, Slender Celery, Wild Celery
Cyclospermum leptophyllum habit Cyclospermum leptophyllum habit Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum flowerhead Cyclospermum leptophyllum flowerhead Cyclospermum leptophyllum fruit Cyclospermum leptophyllum fruit

Cyperus iria

Grasshopper's Cyperus, Ricefield Flatsedge, Rice Flatsedge, Rice Flat Sedge, Umbrella sedge
Cyperus iria Cyperus iria inflorescence (Greensboro, NC)-Late Summer inflorescence (Greensboro, NC)-Late Summer inflorescence (Greensboro, NC)-Late Summer inflorescence (Greensboro, NC)-Late Summer Green stem (Greensboro, NC)-Late Summer Green stem (Greensboro, NC)-Late Summer inflorescence (Greensboro, NC)-Late Summer inflorescence (Greensboro, NC)-Late Summer Cyperus iria Cyperus iria

Digitaria bicornis

Asian Crab Grass, Finger Grass, Hairy Finger Grass, Large Crab Grass, Southern Crabgrass
Form Form Leaf Leaf Blooms Blooms Stalk and leaf sheath Stalk and leaf sheath Seeds Seeds

Digitaria ciliaris

Fingergrass, Henry's Crabgrass, Southern Crabgrass, Southern Crab Grass
Form in bloom Form in bloom Leaves and growth habit Leaves and growth habit Seed heads Seed heads Growing among rocks Growing among rocks
1 Cultivar/Variety

Digitaria ischaemum

Small Crabgrass, Smooth Crabgrass
Form Form Flowers Flowers Leaves Leaves Closeup of spikelets Closeup of spikelets Hairs on the sheath Hairs on the sheath

Dittrichia graveolens

Camphor Inula, Cape Khakiweed, Stinking Fleabane, Stinkwort
Dittrichia graveolens Dittrichia graveolens Dittrichia graveolens Dittrichia graveolens Dittrichia graveolens Dittrichia graveolens Dittrichia graveolens Dittrichia graveolens

Dysphania botrys

Ambrosia Mexicana, Feather Geranium, Goosefoot, Jerusalem Oak, Jerusalem Oak Gooseleaf
Form Form Flowers and stem with hairs Flowers and stem with hairs Flowers and leaves Flowers and leaves Leaves Leaves Leaf detail Leaf detail Underside of leaf Underside of leaf

Emilia

Consumption Weed, Cupid's Paintbrush, Cupid's Shavingbrush, Flora's Paintbrush, Florida Tasselflower, Lilac Tasselflower, Pualele, Purple Sow Thistle, Red Tasselflower, Tassel Flower
Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp. Emilia spp.

Epilobium ciliatum

American Willowherb, Fringed willow-herb, Hairy Willowherb, Hairy Willowweed, Northern Willowherb, Slender Willow-herb
Epilobium ciliatum Epilobium ciliatum Epilobium ciliatum Epilobium ciliatum Epilobium ciliatum Epilobium ciliatum stem stem leaves leaves flowers flowers

Epilobium hirsutum

Codlins and Cream, European Fireweed, Fiddle Grass, Hairy Willowherb, Hairy Willow Herb
Pink petals have a notch at the top. Pink petals have a notch at the top. flowers flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers

Erechtites hieraciifolius

American Burnweed, Butterweed, Eastern Burnweed, Fireweed, Pilewort, White Fireweed
Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L. Erechtites hieraciifolia L.

Erigeron canadensis

Butterweed, Canadian Horseweed, Colstail, Horseweed, Horse Weed, Marestail
Conyza canadensis flowerhead Conyza canadensis flowerhead Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.) Conyza canadensis (L.)

Euphorbia lathyris

Caper Spruge, Gopher Spurge, Mole Plant, Paper Spurge, Sassy Jack
Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris Euphorbia lathyris

Galinsoga quadriradiata

Fringed Quickweed, Hairy Galinsoga, Peruvian Daisy, Shaggy Soldier
Form in summer Form in summer Side view of flower and hairy stem Side view of flower and hairy stem Flowers and leaves Flowers and leaves Flower detail. Note the 3-notched petals Flower detail. Note the 3-notched petals Leaf detail Leaf detail Seedheads forming in Sept. Seedheads forming in Sept.

Galium aparine

Catchweed Bedstraw, Cleavers, Goosegrass, Stickyweed, Sticky willy, Velcro plant
Form Form Whorled leaves Whorled leaves Form Form Flowers Flowers Stem and fruits Stem and fruits Fruits Fruits

Gamochaeta purpurea

Early Cudweed, Purple Everlasting, Spoonleaf Purple Cudweed, Spoonleaf Purple Everlasting
Fruit Fruit Inflorescence Inflorescence Leaf and stem Leaf and stem Stem and leaf Stem and leaf Form Form Habit Habit

Lactuca

Lettuce, Wild Lettuce
Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp. Lactuca spp.
2 Cultivars/Varieties

Medicago polymorpha

Burclover, Bur Medick, California Burclover, Toothed Burclover, Toothed Medick

Mollugo verticillata

Carpetweed, Devil's Grip, Green Carpetweed, Indian Chickweed, Whorled Chickweed
Mollugo verticillata Mollugo verticillata Mollugo verticillata Mollugo verticillata Mollugo verticillata Mollugo verticillata

Persicaria perfoliata

Asiatic Smartweed, Asiatic Tearthumb, Devil's Tail, Giant Climbing Tearthumb, Mile-a-minute, Mile-a-Minute Weed
Stem and Leaves Stem and Leaves Leaf Leaf Form Form Form Form Form Form Leaves and Fruit Leaves and Fruit

Poa annua

Annual Blue, Annual Bluegrass, Annual Meadowgrass, Low Speargrass, Meadow Grass
Poa annua L. Poa annua L. Poa annua L. Poa annua L. Poa annua L. Poa annua L. Poa annua L. Poa annua L. Poa annua in snow Poa annua in snow Poa annua flower Poa annua flower

Setaria viridis

Bottle Grass, Giant Green Foxtail, Green Bristlegrass, Green Foxtail, Green Millet, Pigeongrass, Wild Millet
Form Form Setaria - Giant Foxtail Setaria - Giant Foxtail Leaf and stem Leaf and stem Setaria - Giant Foxtail Setaria - Giant Foxtail Flower - Fall - Warren Co., NC Flower - Fall - Warren Co., NC Flower - Fall - Warren Co., NC Flower - Fall - Warren Co., NC

Sinapis arvensis

Bazzocks, Bread and marmalade, California Rape, Canola, Charlock, Charlock Mustard, Common Mustard, Crunch-weed, Field Kale, Field Mustard, Headridge, Kedlock, Rapeseed, Wild Kale, Wild Mustard
Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis Sinapis arvensis

Sisymbrium irio

London Rocket, Rocket Mustard, Tumble Mustard
Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio Sisymbrium irio

Soliva sessilis

Bindi Weed, Field Burweed, Lawn Burweed, Spurweed
Habit and Flowers Habit and Flowers Fruit Fruit Leaf Leaf Fingers next to the plant Fingers next to the plant Side view Side view Young Plant Young Plant

Sonchus

Common Sowthistle, Hare's Thistle, Milky Tassel, Sowthistle, Sow Thistle
Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp. Sonchus spp.

Sonchus asper

Prickly Sowthistle, Spiney Sowthistle, Spiny-leaved Sow-thistle
Sonchus asper Sonchus asper Sonchus asper Sonchus asper Sonchus asper Sonchus asper Sonchus asper Sonchus asper Basal Leaf Basal Leaf Flower Flower

Thlaspi arvense

Field Pennycress
Flowers Flowers Form Form Flower detail Flower detail Flower and stem Flower and stem Flowers and seed pods Flowers and seed pods Leaves (Illinois in April) Leaves (Illinois in April)

Torilis arvensis

Common Hedge Parsely, Field Hedge Parsley, Spreding Hedge Parsley, Tall Sock Destroyer
Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis Torilis arvensis

Tribulus terrestris

Goathead, Puncturevine
Form growing on a beach Form growing on a beach Leaves and flowers Leaves and flowers Flower detail Flower detail Immature fruit Immature fruit Hairy stem, leaves and fruit Hairy stem, leaves and fruit Compound leaves Compound leaves

Urochloa platyphylla

Broad-leaf Liverseed Grass, Broadleaf Signalgrass, Broadleaf Signal Grass
Form (Guilford County, NC)-Early Fall Form (Guilford County, NC)-Early Fall Back of spikelet (Guilford County, NC)-Early Fall Back of spikelet (Guilford County, NC)-Early Fall Spikelet (Guilford County, NC)-Early Fall Spikelet (Guilford County, NC)-Early Fall Spikelets (Guilford County, NC)-Early Fall Spikelets (Guilford County, NC)-Early Fall Sheath of leaf (Guilford County, NC)-Early Fall Sheath of leaf (Guilford County, NC)-Early Fall Leaf (Guilford County, NC)-Early Fall Leaf (Guilford County, NC)-Early Fall

Veronica arvensis

Common Speedwell, Corn Speedwell, Field Speedwell, Speedwell, Wall Speedwell
Close up of flower and leaves Close up of flower and leaves Basal and stem leaves Basal and stem leaves Form Form Stem and leaves Stem and leaves Leaf underside Leaf underside Basal Leaves Basal Leaves

Veronica hederifolia

Ivyleaf speedwell, Ivy leaved speedwell, Ivy-leaved Speedwell
Blue flower with white center (Greensboro, NC)-Late Winter Blue flower with white center (Greensboro, NC)-Late Winter Plant with alternate leaves and bloom (Greensboro, NC)-Late Wint Plant with alternate leaves and bloom (Greensboro, NC)-Late Wint Veronica hederifolia Veronica hederifolia Hairy leaves with reddish undersides (Greensboro, NC)-Late Wint Hairy leaves with reddish undersides (Greensboro, NC)-Late Wint Hairy stem and bracts with fruit (Greensboro, NC)-Late Winter Hairy stem and bracts with fruit (Greensboro, NC)-Late Winter Immature fruits (Greensboro, NC)-Late Winter Immature fruits (Greensboro, NC)-Late Winter