A
Alder
Alligator weed
Alternanthera philoxeroide
Alternanthera philoxeroide
Amaranth, palmer
Amaranth palmeri
Amaranth palmeri
Amaranth, spiny
Amaranthus spinosus
Amaranthus spinosus
American lotus
Nelumbo lutea
Nelumbo lutea
Annual ryegrass
Lolium multiflorum
Lolium multiflorum
Annual ryegrass
Lolium multiflorum
Lolium multiflorum
Anoda, spurred
Anoda cristata
Anoda cristata
Artichoke
Aster
Aster gracillis
Aster gracillis
Aster, many flowered
Symphyotrichum ericoides
Symphyotrichum ericoides
Aster, seaside
Erigeron glaucus
Erigeron glaucus
Aster, slender
Aster gracillis
Aster gracillis
Aster, spiny
Leucosyris spinosa
Leucosyris spinosa
Aster, white heath
Symphyotrichum ericoides
Symphyotrichum ericoides
Aster, white prairie
Symphyotrichum falcatum
Symphyotrichum falcatum
Aster, wild
Aster gracillis
Aster gracillis
B
Bahiagrass
Paspalum notatum
Paspalum notatum
Balloonvine
Cardiospermum halicacabum
Cardiospermum halicacabum
Barley, little
Hordeum pusillum
Hordeum pusillum
Barnyardgrass
Echinochloa crus-galli
Echinochloa crus-galli
Bedstraw
Galium aparine
Galium aparine
Bedstraw, annual
Galium aparine
Galium aparine
Bedstraw, catchweed
Galium aparine
Galium aparine
Bedstraw, pineywoods
Coreopsis tinctora
Coreopsis tinctora
Bedstraw, smooth
Galium mollugo
Galium mollugo
Beggarticks
Bidens frondosa
Bidens frondosa
Beggarticks, hairy
Bidens pilosa
Bidens pilosa
Beggarweed
Desmodium incanum
Desmodium incanum
Beggarweed, creeping
Desmodium canum
Desmodium canum
Beggarweed, florida
Desmodium tortuosum
Desmodium tortuosum
Bentgrass
Agrostis
Agrostis
Bentgrass
Agrostis
Agrostis
Bindweed
Convolvulus spp
Convolvulus spp
Bindweed, field
Convolvulus arvensis
Convolvulus arvensis
Bindweed, hedge
Calystegia sepium
Calystegia sepium
Birdsfoot trefoil
Lotus corniculatus
Lotus corniculatus
Bittercress
Cardamine hirsuta
Cardamine hirsuta
Bittercress, hairy
Cardamine hirsuta
Cardamine hirsuta
Bittercress, smallflowered
Cardamine parviflora
Cardamine parviflora
Bitterweed
Hymenoxys odorata
Hymenoxys odorata
Black medic
Medicago lupulina
Medicago lupulina
Black-eyed susan
Rudbeckia hirta
Rudbeckia hirta
Blue toadflax
Nuttallanthus canadensis
Nuttallanthus canadensis
Bluebur
Lappula squarrosa
Lappula squarrosa
Blue-eyed mary
Collinsia verna
Collinsia verna
Bluegrass, annual
Poa annua
Poa annua
Bluegrass, bulbous
Poa bulbosa
Poa bulbosa
Bluegrass, roughstalk
Poa trivialis
Poa trivialis
Blueweed
Echium vulgare
Echium vulgare
Box elder
Brassbuttons
Cotula coronopifolia
Cotula coronopifolia
Brome
Bromus spp.
Bromus spp.
Brome, downy
Bromus spp.
Bromus spp.
Broom snakeweed
Amphiachyris dracunculoides
Amphiachyris dracunculoides
Broomweed
Amphiachyris dracunculoides
Amphiachyris dracunculoides
Broomweed, annual
Amphiachyris dracunculoides
Amphiachyris dracunculoides
Buckhorn
Plantago lanceolata
Plantago lanceolata
Buckwheat, wild
Fallopia convolvulus
Fallopia convolvulus
Bullnettle
Cnidoscolus texanus
Cnidoscolus texanus
Bullthistle
Cirsium vulgare
Cirsium vulgare
Burclover
Medicago polymorpha
Medicago polymorpha
Burcucumber
Genus sicyos
Genus sicyos
Burdock
Arctium
Arctium
Burdock, common
Arctium
Arctium
Burhead
Echinodorus cordifolius
Echinodorus cordifolius
Burnweed, american
Erechtites hieraciifolia
Erechtites hieraciifolia
Burweed
Soliva sessilis
Soliva sessilis
Burweed, prickly
Xanthium spinosum
Xanthium spinosum
Buttercup
Ranunculus spp
Ranunculus spp
Buttercup, annual
Ranunculus sceleratus
Ranunculus sceleratus
Buttercup, bulbous
Ranunculus bulbosus
Ranunculus bulbosus
Buttercup, creeping
Ranunculus repens
Ranunculus repens
Buttercup, hairy
Ranunculus sardous
Ranunculus sardous
Buttercup, tall
Ranunculus acris
Ranunculus acris
Buttonweed
Diodia virginiana
Diodia virginiana
Buttonweed, virginia
Diodia virginiana
Diodia virginiana
C
Camelthorn
Alhagi maurorum
Alhagi maurorum
Canarygrass
Carelessweed
Amaranth palmeri
Amaranth palmeri
Carolina ponyfoot
Dichondra carolinesis
Dichondra carolinesis
Carpetgrass
Axonopus fissifolius
Axonopus fissifolius
Carpetweed
Mollugo verticillata
Mollugo verticillata
Carrot, wild
Daucus carota
Daucus carota
Catnip
Nepeta cataria
Nepeta cataria
Celandine, lesser
Ficaria verna
Ficaria verna
Celery, wild
Chamberbitter
Phyllanthus urinaria
Phyllanthus urinaria
Chamise
Chamomile, corn
Chamomile, false
Matricaria perforata
Matricaria perforata
Chamomile, scentless
Tripleurospermum inodorum
Tripleurospermum inodorum
Cheatgrass
Bromus spp.
Bromus spp.
Chickweed
Stellaria media
Stellaria media
Chickweed, common
Stellaria media
Stellaria media
Chickweed, mouseear
Cerastium spp.
Cerastium spp.
Chicory
Cichorium intybus
Cichorium intybus
Cinquefoil
Potentilla spp.
Potentilla spp.
Cinquefoil, rough
Potentilla norvegica
Potentilla norvegica
Cinquefoil, sulfur
Potentilla recta
Potentilla recta
Clover
Trifolium spp.
Trifolium spp.
Clover, bur
Medicago polymorpha
Medicago polymorpha
Clover, crimson
Trifolium incarnatum
Trifolium incarnatum
Clover, dutch
Trifolium repens
Trifolium repens
Clover, honeysuckle
Trifolium repens
Trifolium repens
Clover, large hop
Trifolium aureum
Trifolium aureum
Clover, purplewort
Trifolium repens
Trifolium repens
Clover, rabbitfoot
Trifolium arvense
Trifolium arvense
Clover, red
Trifolium pratense
Trifolium pratense
Clover, strawberry
Trifolium fragiferum
Trifolium fragiferum
Clover, sweet
Melilotus officinalis
Melilotus officinalis
Clover, white
Trifolium repens
Trifolium repens
Clover, white sweet
Melilotus albus
Melilotus albus
Clover, white trefoil
Trifolium repens
Trifolium repens
Clover, yellow sweet
Melilotus officinalis
Melilotus officinalis
Cockle
Lolium temulentum
Lolium temulentum
Cockle, corn
Agrostemma githago
Agrostemma githago
Cocklebur
Xanthium strumarium
Xanthium strumarium
Cocklebur, common
Xanthium strumarium
Xanthium strumarium
Cocklebur, oriental
Xanthium occidentale
Xanthium occidentale
Cocklebur, spiny
Xanthium spinosum
Xanthium spinosum
Coffee senna
Senna occidentalis
Senna occidentalis
Coffeebean
Sesbania herbacea
Sesbania herbacea
Coffeeweed
Sesbania herbacea
Sesbania herbacea
Columbus grass
Sorghum almum
Sorghum almum
Common groundsel
Senecio vulgaris
Senecio vulgaris
Compassplant
Silphium laciniatum
Silphium laciniatum
Conical catchfly
Copperleaf
Ascalypha spp.
Ascalypha spp.
Copperleaf, virginia
Acalypha virginica
Acalypha virginica
Coreopsis, plains
Corn spurry
Spergula arvensis
Spergula arvensis
Cornflower
Centaurea cyanus
Centaurea cyanus
Crabgrass
Digitaria spp.
Digitaria spp.
Crabgrass, hairy
Digitaria sanguinalis
Digitaria sanguinalis
Crabgrass, large
Digitaria sanguinalis
Digitaria sanguinalis
Crabgrass, smooth
Digitaria ischaemum
Digitaria ischaemum
Crabgrass, southern
Digitaria ciliaris
Digitaria ciliaris
Crabgrass, tropical
Digitaria ciliaris
Digitaria ciliaris
Crazyweed
Oxytropis spp.
Oxytropis spp.
Creeper, virgina
Parthenocissus quinquefolia
Parthenocissus quinquefolia
Creeping charlie
Glechoma hederacea
Glechoma hederacea
Creeping jenny
Lysimachia nummularia
Lysimachia nummularia
Croton
Croton capitatus
Croton capitatus
Croton, tropic
L. croton glandulosus
L. croton glandulosus
Croton, woolly
Croton capitatus
Croton capitatus
Crowfootgrass
Dactyloctenium aegyptium
Dactyloctenium aegyptium
Crownvetch
Securigera varia
Securigera varia
Crownvetch, trailing
Securigera varia
Securigera varia
Cudweed
Gnaphalium spp.
Gnaphalium spp.
Cudweed, fragrant
Gnaphalium obtusifolium
Gnaphalium obtusifolium
Cudweed, fragrant
Gnaphalium obtusifolium
Gnaphalium obtusifolium
Cudweed, purple
Gamochaeta purpurea
Gamochaeta purpurea
Cupgrass, prairie
Eriochloa contracta
Eriochloa contracta
Cupgrass, southwestern
Eriochloa acuminata
Eriochloa acuminata
Cupgrass, woolly
Eriochloa villosa
Eriochloa villosa
Curly indigo
D
Daisy, american
Leucanthemum vulgare
Leucanthemum vulgare
Daisy, english
Bellis perennis
Bellis perennis
Daisy, false
Eclipta prostrata
Eclipta prostrata
Daisy, oxeye
Leucanthemum vulgare
Leucanthemum vulgare
Dallisgrass
Paspalum dilatatum
Paspalum dilatatum
Dandelion
Taraxacum
Taraxacum
Dandelion, carolina false
Pyrrhoppapus carolinianus
Pyrrhoppapus carolinianus
Dandelion, cat's ear
Hypochaeris radicata
Hypochaeris radicata
Dandelion, common
Taraxacum
Taraxacum
Dandelion, fall
Leontodon autumnalis
Leontodon autumnalis
Dandelion, false
Hypochaeris radicata
Hypochaeris radicata
Dandelion, spotted catsear
Dandelion, virginia dwarf
Krigia virginica
Krigia virginica
Dayflower
Commelina communis
Commelina communis
Dayflower, common
Commelina communis
Commelina communis
Dayflower, virginia commelina virginica
Dead nettle
Lamium purpureum
Lamium purpureum
Dead nettle, purple
Lamium purpureum
Lamium purpureum
Deergrass
Muhlenbergia rigens
Muhlenbergia rigens
Devil's claw
Harpagophytum
Harpagophytum
Dichondra
Dichondra repens
Dichondra repens
Dichondra, carolina
Dichondra carolinesis
Dichondra carolinesis
Dock
Rumex spp.
Rumex spp.
Dock, broadleaf
Rumex obtusifolius
Rumex obtusifolius
Dock, curly
Rumex crispus
Rumex crispus
Dock, smooth
Rumex altissimus
Rumex altissimus
Dogbane
Apocynum cannabinum
Apocynum cannabinum
Dogbane, hemp
Apocynum cannabinum
Apocynum cannabinum
Dogfennel
Eupatorium capillifolium
Eupatorium capillifolium
Dollarweed
Hydrocotyle verticillata
Hydrocotyle verticillata
Doveweed
Croton capitatus
Croton capitatus
E
Eclipta
Eclipta prostrata
Eclipta prostrata
Elderberry
Sambucus nigra spp.
Sambucus nigra spp.
Evening primrose
Oenothera spp.
Oenothera spp.
Evening primrose, cutleaf
Oenothera laciniata
Oenothera laciniata
F
False flax
Camelina sativa
Camelina sativa
False flax, smallseed
Camelina microcarpa
Camelina microcarpa
Fanweed
Thlaspi arvense
Thlaspi arvense
Fiddleneck
Amsinckia spp.
Amsinckia spp.
Fiddleneck, coast
Amsinckia intermedia
Amsinckia intermedia
Fieldcress, austrian
Rorippa austriaca
Rorippa austriaca
Filaree
Erodium cicutarium
Erodium cicutarium
Filaree, redstem
Erodium cicutarium
Erodium cicutarium
Filaree, whitestem
Erodium moschatum
Erodium moschatum
Fireweed
Chamaenerion spp.
Chamaenerion spp.
Fivehook bassia bassia
Hyssopifolia
Hyssopifolia
Fleabane
Erigeron spp.
Erigeron spp.
Fleabane, annual
Erigeron annuus
Erigeron annuus
Fleabane, daisy
Erigeron annuus
Erigeron annuus
Fleabane, flax-leaf
Erigeron bonariensis
Erigeron bonariensis
Fleabane, hairy
Erigeron bonariensis
Erigeron bonariensis
Fleabane, philadelphia
Erigeron philadelphicus
Erigeron philadelphicus
Fleabane, rough
Erigeron strigosus
Erigeron strigosus
Flixweed
Descurainia sophia
Descurainia sophia
Florida betony
Stachys floridana
Stachys floridana
Florida pulsey
Richardia scabra
Richardia scabra
Florida's paintbrush
Emilia fosbergii
Emilia fosbergii
Four-o-clock, wild
Mirabilis nyctaginea
Mirabilis nyctaginea
Foxtail
Setaria spp
Setaria spp
Foxtail, annual
Setaria viridis
Setaria viridis
Foxtail, giant
Setaria faberi
Setaria faberi
Foxtail, green
Setaria viridis
Setaria viridis
Foxtail, yellow
Setaria pumila
Setaria pumila
Frenchweed
Thlaspi arvense
Thlaspi arvense
G
Galinsoga
Galinsoga parviflora
Galinsoga parviflora
Galinsoga, hairy
Galinsoga quadriradiata
Galinsoga quadriradiata
Galinsoga, small flower
Galinsoga parviflora
Galinsoga parviflora
Garlic, wild
Allium vineale
Allium vineale
Geranium, carolina
Geranium carolinianum
Geranium carolinianum
Geranium, dovefoot
Geranium molle
Geranium molle
Geranium, wild
Geranium maculatum
Geranium maculatum
Goathead
Tribulus terrestris
Tribulus terrestris
Goatsbeard
Aruncus dioicus
Aruncus dioicus
Goatweed
Croton capitatus
Croton capitatus
Goldenrod
Solidago
Solidago
Goosefoot
Chenopodium
Chenopodium
Goosegrass
Eleusine indica
Eleusine indica
Greenbriar, roundleaf
Smilax rotundifolia
Smilax rotundifolia
Gromwell , corn
Buglossoides arvensis
Buglossoides arvensis
Ground ivy
Glechoma hederacea
Glechoma hederacea
Groundcherry, clammy
Physalis heterophylla
Physalis heterophylla
Groundcherry, cutleaf
Physalis angulata
Physalis angulata
Groundcherry, lanceleaf
Physalis angulata
Physalis angulata
Groundsel
Senecio vulgaris
Senecio vulgaris
Gumweed
Grindelia squarrosa
Grindelia squarrosa
H
Halogeton
Halogeton glomeratus
Halogeton glomeratus
Hawksbeard, asiatic
Youngia japonica
Youngia japonica
Hawksbeard, narrowleaf
Crepis tectorum
Crepis tectorum
Hawkweed
Hieracium spp.
Hieracium spp.
Hawkweed, mouseear
Hieracium pilosella
Hieracium pilosella
Hawkweed, orange
Pilosella aurantiaca
Pilosella aurantiaca
Hawkweed, yellow
Hieracium caespitosum
Hieracium caespitosum
Healall
Prunella vulgaris
Prunella vulgaris
Heartleaf drymary
Drymaria cordata
Drymaria cordata
Hemlock
Conium maculatum
Conium maculatum
Hemp
Cannabis sativa
Cannabis sativa
Hemp, wild
Cannabis sativa
Cannabis sativa
Henbane, black
Hyoscyamus niger
Hyoscyamus niger
Henbit
Lamium amplexicaule
Lamium amplexicaule
Hoary cress
Lepidium draba
Lepidium draba
Hogweed, giant
Heracleum mantegazzianum
Heracleum mantegazzianum
Hogwort
Croton capitatus
Croton capitatus
Honeyvine milkweed
Cynanchum laeve
Cynanchum laeve
Hop clover
Trifolium aureum
Trifolium aureum
Horsenettle
Solanum carolinense
Solanum carolinense
Horsetail
Erigeron canadensis
Erigeron canadensis
Horseweed
Erigeron canadensis
Erigeron canadensis
Horseweed, sprawling
Calyptocarpus vialis
Calyptocarpus vialis
I
Innocence
Cenchrus spp.
Cenchrus spp.
Ironweed
Vernonia spp
Vernonia spp
Ironweed, tall
Vernonia gigantea
Vernonia gigantea
Ironweed, western
Vernonia baldwinii
Vernonia baldwinii
Itchgrass
Rottboellia cochinchinensis
Rottboellia cochinchinensis
J
Jerusalem artichoke
Helianthus tuberosus
Helianthus tuberosus
Jewelweed
Impatiens capensis
Impatiens capensis
Jimsonweed
Datura stramonium
Datura stramonium
Johnsongrass
Sorghum halepense
Sorghum halepense
Junglerice
Echinochloa colona
Echinochloa colona
K
Kikuyu grass
Pennisetum clandestinum
Pennisetum clandestinum
Knapweed
Centaurea spp.
Centaurea spp.
Knapweed, diffuse
Centaurea diffusa
Centaurea diffusa
Knapweed, spotted
Centaurea stoebe
Centaurea stoebe
Knawel
Scleranthus annuus
Scleranthus annuus
Knotweed
Polygonum spp.
Polygonum spp.
Knotweed, prostrate
Polygonum aviculare
Polygonum aviculare
Knotweed, water
Polygonum amphibium
Polygonum amphibium
Kochia
Bassia scoparia
Bassia scoparia
Kudzu
Pueraria montana
Pueraria montana
Kyllinga, annual
Cyperus sesquiflorus
Cyperus sesquiflorus
Kyllinga, cockscomb
Kyllinga gracillima
Kyllinga gracillima
Kyllinga, false green
Kyllinga gracillima
Kyllinga gracillima
Kyllinga, green
Kyllinga brevifolia
Kyllinga brevifolia
L
Lady's mantle
Alchemilla mollis
Alchemilla mollis
Ladysthumb
Persicaria maculosa
Persicaria maculosa
Lambsquarters
Chenopodium album
Chenopodium album
Lambsquarters, common
Chenopodium album
Chenopodium album
Lawn burweed
Soliva sessilis
Soliva sessilis
Lespedeza
Lespedeza cuneata
Lespedeza cuneata
Lespedeza, annual
Lespedeza striata
Lespedeza striata
Lespedeza, common
Lespedeza cuneata
Lespedeza cuneata
Lespedeza, sericea
Lespedeza perenne
Lespedeza perenne
Lettuce, blue
Lactuca biennis
Lactuca biennis
Lettuce, prickly
Lactuca serriola
Lactuca serriola
Lettuce, wild
Lactuca virosa
Lactuca virosa
Licorice, wild
Glycyrrhiza lepidota
Glycyrrhiza lepidota
Lippia
Lippia alba
Lippia alba
Lobularia
Locoweed
Oxytropis spp.
Oxytropis spp.
Locust, black
Robinia pseudoacacia
Robinia pseudoacacia
Locust, honey
Gleditsia triacanthos
Gleditsia triacanthos
Loosestrife, purple
Lythrum salicaria
Lythrum salicaria
Lovegrass
Eragrostis
Eragrostis
Lovegrass, gophertail
Eragrostis cillaris
Eragrostis cillaris
Lovegrass, tufted
Eragrostis pectinacea
Eragrostis pectinacea
Lupine
M
Madder, field
Sherardia spp.
Sherardia spp.
Mallow
Malva neglecta
Malva neglecta
Mallow, bristly
Modiola caroliniana
Modiola caroliniana
Mallow, common
Malva neglecta
Malva neglecta
Mallow, dwarf
Malva neglecta
Malva neglecta
Mallow, indiana
Malva neglecta
Malva neglecta
Marestail
Erigeron canadensis
Erigeron canadensis
Marigold, roundleafed
Tagetes erecta
Tagetes erecta
Marigold, wild
Baileya multiradiata
Baileya multiradiata
Marijuana
Cannabis sativa
Cannabis sativa
Marshelder
Iva annua
Iva annua
Mary's grass
Microstegium vimineum
Microstegium vimineum
Matchweed
Lippia nodiflora
Lippia nodiflora
Mayweed
Anthemis cotula
Anthemis cotula
Mayweed, scentless
Matricaria perforata
Matricaria perforata
Mayweed, stinking
Anthemis cotula
Anthemis cotula
Mesquite
Prosopis glandulosa
Prosopis glandulosa
Mexicanweed
Dysphania ambrosioides
Dysphania ambrosioides
Milkvetch
Astragalus
Astragalus
Milkweed
Asclepias
Asclepias
Milkweed, bloodflower
Asclepias curassavica
Asclepias curassavica
Milkweed, climbing
Cynanchum laeve
Cynanchum laeve
Millet, browntop
Brachiaria ramosa
Brachiaria ramosa
Millet, common
Panicum miliaceum
Panicum miliaceum
Millet, proso
Panicum miliaceum
Panicum miliaceum
Mimosa
Mimosa pudica
Mimosa pudica
Miner lettuce
Claytonia perfoliata
Claytonia perfoliata
Moneywort
Lysimachia nummularia
Lysimachia nummularia
Morningglory
Ipomoea
Ipomoea
Morningglory, annual
Ipomoea
Ipomoea
Morningglory, entireleaf
Ipomea hederacea var. integriuscula
Ipomea hederacea var. integriuscula
Morningglory, ivyleaf
Ipomea hederacea
Ipomea hederacea
Morningglory, pitted
Ipomea lacunosa
Ipomea lacunosa
Morningglory, woolly
Argyreia nervosa
Argyreia nervosa
Moss
Bryophyta
Bryophyta
Mugwort
Artemisia vulgaris
Artemisia vulgaris
Mulberry weed
Fatoua villosa
Fatoua villosa
Mullein
Verbascum thapsus
Verbascum thapsus
Mullein, common
Verbascum thapsus
Verbascum thapsus
Mullien, turkey
Croton capitatus
Croton capitatus
Mustard
Sinapis arvensis
Sinapis arvensis
Mustard, black
Brassica nigra
Brassica nigra
Mustard, blue
Mustard, garlic
Alliaria petiolata
Alliaria petiolata
Mustard, hedge
Sisymbrium officinale
Sisymbrium officinale
Mustard, tansy
Descurainia pinnata
Descurainia pinnata
Mustard, tumble
Sisymbrium altissimum
Sisymbrium altissimum
Mustard, white
Brassica alba
Brassica alba
Mustard, wild
Sinapis arvensis
Sinapis arvensis
Mustard, yellow
Brassica alba
Brassica alba
N
Nettle, burning
Urtica urens
Urtica urens
Nettle, stinging
Urtica dioica
Urtica dioica
Nettle, tall
Urtica dioica
Urtica dioica
Nettles
Urtica dioica
Urtica dioica
Nightshade
Solanaceae spp.
Solanaceae spp.
Nightshade, black
Solanum nigrum
Solanum nigrum
Nightshade, cutleaf
Solanum triflorum
Solanum triflorum
Nightshade, eastern black
Solanum ptychanthum
Solanum ptychanthum
Nightshade, hairy
Solanum vilosum
Solanum vilosum
Nightshade, silverleaf
Solanum elaeagnifolium
Solanum elaeagnifolium
Nimblewill
Muhlenbergia schreberi
Muhlenbergia schreberi
Nutgrass
Cyperus esculentus
Cyperus esculentus
Nutsedge, purple
Cyperus rotundus
Cyperus rotundus
Nutsedge, yellow
Cyperus esculentus
Cyperus esculentus
O
Oat, wild
Avena fatua
Avena fatua
Old world diamond flower
Hedyotis
Hedyotis
Oxalis
Oxalis
Oxalis
Oxalis, buttercup
Oxalis pes-caprae
Oxalis pes-caprae
Oxeye, creeping
Sphagneticola trilobata
Sphagneticola trilobata
Oxtongue, bristly
Helminthotheca echioides
Helminthotheca echioides
P
Panicum
Panicum spp
Panicum spp
Panicum, browntop
Panicum fasiculatum
Panicum fasiculatum
Panicum, fall
Panicum dichotomiflorum
Panicum dichotomiflorum
Panicum, texas
Panicum texanum
Panicum texanum
Pansy, field
Viola arvensis
Viola arvensis
Parsley piert
Aphanes
Aphanes
Parsnip
Pastinaca sativa
Pastinaca sativa
Parsnip, wild
Pastinaca sativa
Pastinaca sativa
Paspalum, bull
Paspalum setaceum
Paspalum setaceum
Paspalum, thin
Paspalum setaceum
Paspalum setaceum
Pea, swainson
Sphaerophysa salsula
Sphaerophysa salsula
Pearlwort
Sagina procumbens
Sagina procumbens
Pearlwort, birdseye
Sagina procumbens
Sagina procumbens
Pennycress
Thlaspi arvense
Thlaspi arvense
Pennycress, field
Thlaspi arvense
Thlaspi arvense
Pennywort
Hydrocotyle verticillata
Hydrocotyle verticillata
Peppergrass
Lepidium virginicum
Lepidium virginicum
Pepperweed
Lepidium virginicum
Lepidium virginicum
Pepperweed, field
Lepidium campestre
Lepidium campestre
Pepperweed, perennial
Lepidium latifolium
Lepidium latifolium
Pepperweed, virginia
Lepidium virginicum
Lepidium virginicum
Pepperweed, yellowflower
Lepidium flavum
Lepidium flavum
Perennial ryegrass
Lolium perenne
Lolium perenne
Pigweed
Amaranthus spp.
Amaranthus spp.
Pigweed, prostrate
Amaranthus blitoides
Amaranthus blitoides
Pigweed, redroot
Amaranthus retroflexus
Amaranthus retroflexus
Pigweed, russian
Axyris amaranthoides
Axyris amaranthoides
Pigweed, smooth
Amaranthus hybridus
Amaranthus hybridus
Pigweed, tumble
Amaranthus albus
Amaranthus albus
Pineapple weed
Chamomilla suaveolens
Chamomilla suaveolens
Plantain
Plantaginaceae
Plantaginaceae
Plantain, blackseed
Plantago rugelli
Plantago rugelli
Plantain, bracted
Plantago aristata
Plantago aristata
Plantain, broadleaf
Plantago major
Plantago major
Plantain, buckhorn
Plantago lanceolata
Plantago lanceolata
Plantain, hoary
Plantago media
Plantago media
Plantain, narrow-leaf
Plantago lanceolata
Plantago lanceolata
Plantain, paleseed
Plantago virginica
Plantago virginica
Plantain, slender
Plantago elongata
Plantago elongata
Plantain, water
Alisma subcordatum
Alisma subcordatum
Plantain, woolly
Plantago patagonica
Plantago patagonica
Poison hemlock
Conium maculatum
Conium maculatum
Poison ivy
Toxicodendron radicans
Toxicodendron radicans
Poison oak
Toxicodendron diversilobum
Toxicodendron diversilobum
Pokeberry
Phytolacca americana
Phytolacca americana
Pokeweed
Phytolacca americana
Phytolacca americana
Poorjoe
Diodia teres
Diodia teres
Povertyweed
Diodia teres
Diodia teres
Prickly sida
Sida spinosa
Sida spinosa
Primrose
Oenothera spp.
Oenothera spp.
Puncture weed
Tribulus terrestris
Tribulus terrestris
Puncturevine
Tribulus terrestris
Tribulus terrestris
Purslane
Portulaca oleracea
Portulaca oleracea
Purslane, annual
Portulaca oleracea
Portulaca oleracea
Purslane, common
Portulaca oleracea
Portulaca oleracea
Purslane, horse
Trianthema portulacastrum
Trianthema portulacastrum
R
Rabbitbrush
Ericameria nauseosa
Ericameria nauseosa
Rabbitfoot grass
Polypogon monspeliensis
Polypogon monspeliensis
Radish, wild
Raphanus raphanistrum
Raphanus raphanistrum
Ragweed
Ambrosia artemisiifolia
Ambrosia artemisiifolia
Ragweed, bur
Ambrosia grayii
Ambrosia grayii
Ragweed, common
Ambrosia artemisiifolia
Ambrosia artemisiifolia
Ragweed, giant
Ambrosia trifida
Ambrosia trifida
Ragweed, western
Ambrosia psilostachya
Ambrosia psilostachya
Ragwort, tansy
Senecio jacobaea l.
Senecio jacobaea l.
Rape, wild
Brassica rapa
Brassica rapa
Rattail fescue
Vulpia myuros
Vulpia myuros
Red fescue
Festuca rubra
Festuca rubra
Redbud
Cercis canadensis
Cercis canadensis
Redmaids
Calandrinia ciliata
Calandrinia ciliata
Redstem
Erodium cicutarium
Erodium cicutarium
Redweed
Phytolacca americana
Phytolacca americana
Rescuegrass
Bromus catharticus
Bromus catharticus
Rice flatsedge
Cyperus iria
Cyperus iria
Rocket, london
Sisymbrium irio
Sisymbrium irio
Rose, wild southern
Rush
Juncus effusus
Juncus effusus
Rush skeletonweed
Chondrilla juncea
Chondrilla juncea
Rush, path
Juncus tenuis
Juncus tenuis
Rush, slender
Juncus tenuis
Juncus tenuis
Ryegrass, italian
Festuca perennis
Festuca perennis
S
Sage, mediterranean
Salvia aethiopis
Salvia aethiopis
Sage, whiteleaf
Salvia leucophylla
Salvia leucophylla
Sagebrush
Artemisia tridentata
Artemisia tridentata
Salsify
Tragopogon porrifolius
Tragopogon porrifolius
Salsify, meadow
Tragopogon pratensis
Tragopogon pratensis
Salsify, western
Tragopogon dubius
Tragopogon dubius
Salt cedar
Tamarix spp
Tamarix spp
Sand shinnery oak
Quercus havardii
Quercus havardii
Sandbur
Cenchrus echinatus
Cenchrus echinatus
Sandbur, field
Cenchrus echinatus
Cenchrus echinatus
Sandbur, southern
Cenchrus echinatus
Cenchrus echinatus
Scarlet pimpernel
Anagallis arvensis
Anagallis arvensis
Seashore paspalum
Paspalum vaginatum
Paspalum vaginatum
Sedge
Cyperus spp.
Cyperus spp.
Sedge, annual
Cyperus compressus
Cyperus compressus
Sedge, cylindrical
Cyperus retrorsus
Cyperus retrorsus
Sedge, globe
Carex perglobosa
Carex perglobosa
Sedge, surinam
Cyperus surinamensis
Cyperus surinamensis
Sedge, texas
Carex texensis
Carex texensis
Sesbania, hemp
Sesbania herbacea
Sesbania herbacea
Shattercane
Sorghum bicolor
Sorghum bicolor
Shepherd's purse
Capsella bursa-pastoris
Capsella bursa-pastoris
Sicklepod
Senna obtusifolia
Senna obtusifolia
Signalgrass
Brachiaria spp.
Brachiaria spp.
Signalgrass, broadleaf
Urochloa platyphylla
Urochloa platyphylla
Silver hairgrass
Aira caryophyllea
Aira caryophyllea
Smartgrass
Polygonum pensylvanicum
Polygonum pensylvanicum
Smartweed
Polygonum pensylvanicum
Polygonum pensylvanicum
Smartweed, pale
Persicaria lapathifolia
Persicaria lapathifolia
Smartweed, pennslyvania
Polygonum pensylvanicum
Polygonum pensylvanicum
Smutgrass
Sporobolus indicus
Sporobolus indicus
Sneezeweed
Hymenoxys odorata
Hymenoxys odorata
Sneezeweed, bitter
Hymenoxys odorata
Hymenoxys odorata
Soda apple, tropical
Solanum viarum
Solanum viarum
Sorrel
Rumex acetosa
Rumex acetosa
Sorrel, heartwing
Rumex hastatulus
Rumex hastatulus
Sorrel, red
Rumex acetosella
Rumex acetosella
Sorrel, sheep
Rumex acetosella
Rumex acetosella
Sowthistle
Sonchus oleraceus
Sonchus oleraceus
Sowthistle, annual
Sonchus oleraceus
Sonchus oleraceus
Sowthistle, common
Sonchus oleraceus
Sonchus oleraceus
Sowthistle, perennial
Sonchus arvensis
Sonchus arvensis
Sowthistle, prickly
Sonchus asper
Sonchus asper
Sowthistle, spiny
Sonchus asper
Sonchus asper
Spanish needles
Bidens alba
Bidens alba
Spatterdock
Speedwell
Veronica officinalis
Veronica officinalis
Speedwell, corn
Veronica arvensis
Veronica arvensis
Speedwell, field
Veronica persica
Veronica persica
Speedwell, persian
Veronica persica
Veronica persica
Speedwell, purslane
Veronica peregrina
Veronica peregrina
Speedwell, slender
Veronica filiformis
Veronica filiformis
Speedwell, thymeleaf
Veronica serpyllifolia
Veronica serpyllifolia
Spiderwort
Spotted catsear
Sprangletop
Leptochloa
Leptochloa
Spurge
Euphorbia
Euphorbia
Spurge, annual
Euphorbia maculata
Euphorbia maculata
Spurge, garden
Euphorbia hirta
Euphorbia hirta
Spurge, leafy
Euphorbia esula
Euphorbia esula
Spurge, prostrate
Euphorbia maculata
Euphorbia maculata
Spurge, spotted
Euphorbia maculata
Euphorbia maculata
Spurge, thyme-leaf
Euphorbia serpyllifolia
Euphorbia serpyllifolia
Spurweed
Soliva sessilis
Soliva sessilis
St. johnswort
Hypericum perforatum
Hypericum perforatum
St. johnswort, common
Hypericum perforatum
Hypericum perforatum
Star of bethlehem
Ornithogalum
Ornithogalum
Starthistle, malta
Centaurea melitensis
Centaurea melitensis
Starthistle, purple
Centaurea calcitrapa
Centaurea calcitrapa
Starthistle, yellow
Centaurea solstitialis
Centaurea solstitialis
Starwort, little
Stiltgrass, japanese
Microstegium vimineum
Microstegium vimineum
Stinkgrass
Eragrostis cilianesis
Eragrostis cilianesis
Stinkweed
Thlaspi arvense
Thlaspi arvense
Stitchwort
Stellaria holostea
Stellaria holostea
Strawberry, indian mock
Duchesnea indica
Duchesnea indica
Strawberry, wild
Fragaria vesca
Fragaria vesca
Sumac
Sunflower
Helianthus
Helianthus
Sunflower, common
Helianthus
Helianthus
Sunflower, false
Heliopsis helianthoides
Heliopsis helianthoides
Sunflower, prairie
Helianthus petiolaris
Helianthus petiolaris
Sweet potato, wild
Ipomoea pandurata
Ipomoea pandurata
Swinecress
Coronopus
Coronopus
Switchgrass
Panicum virgatum
Panicum virgatum
T
Tall fescue
Festuca arundinacea
Festuca arundinacea
Tanweed
Polygonum amphibium
Polygonum amphibium
Tarweed
Teasel
Dipsacus
Dipsacus
Teasel, common
Dipsacus
Dipsacus
Texasweed
Caperonia palustris
Caperonia palustris
Thistle
Cirsium spp.
Cirsium spp.
Thistle, artichoke
Cynara cardunculus
Cynara cardunculus
Thistle, blessed milk
Silybum marianum
Silybum marianum
Thistle, bull
Cirsium vulgare
Cirsium vulgare
Thistle, canada
Cirsium arvense
Cirsium arvense
Thistle, italian
Carduus pycnocephalus
Carduus pycnocephalus
Thistle, musk
Carduus nutans
Carduus nutans
Thistle, nodding
Carduus nutans
Carduus nutans
Thistle, plumeless
Carduus acanthoides
Carduus acanthoides
Thistle, russian
Salsola
Salsola
Thistle, scotch
Onopordum acanthium
Onopordum acanthium
Thistle, wavyleaf bull
Cirsium undulatum
Cirsium undulatum
Thistle, woolly distaff
Carthamus lanatus
Carthamus lanatus
Tickseed
Toadflax
Linaria vulgaris
Linaria vulgaris
Toadflax, canada
Nuttallanthus canadensis
Nuttallanthus canadensis
Torpedograss
Panicum repens
Panicum repens
Trampweed, facelis
Facelis retusa
Facelis retusa
Tree of heaven
Ailanthus altissima
Ailanthus altissima
Trefoil, tick
Tumbleweed
Turnip, wild
Brassica rapa
Brassica rapa
V
Velvetleaf
Abutilon theophrasti
Abutilon theophrasti
Venice mallow
Hibiscus trionum
Hibiscus trionum
Venus' looking-glass
Triodanis perfoliata
Triodanis perfoliata
Verbena
Verbena officinalis
Verbena officinalis
Veronica
Veronica officinalis
Veronica officinalis
Vervain
Vebena spp
Vebena spp
Vervain, blue
Verbena hastata
Verbena hastata
Vervain, hoary
Verbena stricta
Verbena stricta
Vervain, prostrate
Verbena bracteata
Verbena bracteata
Vervain, tall
Verbena bonariensis
Verbena bonariensis
Vetch
Vicia sativa
Vicia sativa
Vetch, bird
Vicia cracca
Vicia cracca
Vetch, common
Vicia sativa
Vicia sativa
Vetch, narrowleaf
Vicia sativa
Vicia sativa
Vetch, wild
Vicia sativa
Vicia sativa
Violet, field
Viola arvensis
Viola arvensis
Violet, johnny-jump-up
Viola rafinesquii
Viola rafinesquii
Violet, wild
Viola sororia
Viola sororia
W
Waterhemp, common
Amaranthus rudis
Amaranthus rudis
Weedy red rice
Oryza sativa l.
Oryza sativa l.
Western clematis
Clematis ligusticifolia
Clematis ligusticifolia
Wild onion
Allium
Allium
Willow
Willowherb
Willowweed, panicle
Epilobium brachycarpum
Epilobium brachycarpum
Windmillgrass
Chloris
Chloris
Wintercress, bitter
Barbarea vulgaris
Barbarea vulgaris
Wiregrass
Wirestem muhly
Muhlenbergia frondosa
Muhlenbergia frondosa
Wisteria
Wisteria
Wisteria sinensis
Wisteria sinensis
Witchgrass
Panicum capillare
Panicum capillare
Witchweed
Woodsorrel
Oxalis
Oxalis
Woodsorrel, creeping
Oxalis corniculata
Oxalis corniculata
Woodsorrel, yellow
Oxalis stricta
Oxalis stricta
Wormseed
Dysphania ambrosioides
Dysphania ambrosioides
Wormwood, absinth
Artemisia absinthium
Artemisia absinthium
Wormwood, biennial
Artemisia biennis
Artemisia biennis
Wormwood, louisiana
Artemisia ludoviciana
Artemisia ludoviciana