| African boxthorn |
Lycium ferocissimum |
2 |
| African mile-a-minute |
Mikania cordata |
2 |
| African redhead agama |
Agama agama africana |
1 |
| African rue |
Peganum harmala |
2 |
| alectra |
Alectra sessiliflora |
1 |
| alfalfa |
Medicago spp. |
1 |
| alfombrilla |
Drymaria arenarioides |
2 |
| algarobilla |
Prosopis argentina |
2 |
| algarrobillo |
Prosopis campestris |
2 |
| algarrobillo |
Prosopis elata |
1 |
| alkali mallow |
Malvella leprosa |
3 |
| alsike clover |
Trifolium hybridum |
1 |
| American black nightshade |
Solanum americanum |
2 |
| Amur honeysuckle |
Lonicera maackii |
7 |
| Amur peppervine |
Ampelopsis brevipedunculata |
7 |
| anchored waterhyacinth |
Eichhornia azurea |
7 |
| annual bluegrass |
Poa annua |
10 |
| annual false-brome |
Brachypodium distachyon |
1 |
| annual marshelder |
Iva annua |
2 |
| annual yellow sweetclover |
Melilotus indicus |
2 |
| apple-of-Peru |
Nicandra physalodes |
2 |
| Arabian schismus |
Schismus arabicus |
2 |
| Argentine screwbean |
Prosopis strombulifera |
1 |
| arrowleaf sida |
Sida rhombifolia |
2 |
| arrowleaved monochoria |
Monochoria hastata |
4 |
| Asian nakedwood |
Colubrina asiatica |
4 |
| Asiatic dayflower |
Commelina communis |
2 |
| Athel tamarisk |
Tamarix aphylla |
1 |
| Australian fingergrass |
Chloris truncata |
1 |
| Australian-pine |
Casuarina equisetifolia |
1 |
| autumn-olive |
Elaeagnus umbellata |
7 |
| Banks melastoma |
Melastoma malabathricum |
1 |
| barb goatgrass |
Aegilops triuncialis |
1 |
| barbe de tigre |
Prosopis kuntzei |
1 |
| barnyardgrass |
Echinochloa crus-galli |
5 |
| beach vitex |
Vitex rotundifolia |
2 |
| Bell's honeysuckle |
Lonicera x bella |
5 |
| bellardia |
Bellardia trixago |
1 |
| Benghal dayflower |
Commelina benghalensis |
11 |
| bermudagrass |
Cynodon dactylon |
3 |
| biddy-biddy |
Acaena novae-zelandiae |
2 |
| big chickweed |
Cerastium fontanum ssp. vulgare |
3 |
| big quakinggrass |
Briza maxima |
2 |
| bindweed |
Convolvulus spp. |
1 |
| birdsfoot trefoil |
Lotus corniculatus |
3 |
| birdsrape mustard |
Brassica rapa |
3 |
| bishops goutweed |
Aegopodium podagraria |
5 |
| bittersweet nightshade |
Solanum dulcamara |
9 |
| Black dog-strangling vine, black swallowwort |
Cynanchum louiseae |
10 |
| black henbane |
Hyoscyamus niger |
3 |
| black knapweed |
Centaurea nigra |
2 |
| black locust |
Robinia pseudoacacia |
7 |
| black medic |
Medicago lupulina |
4 |
| black mimosa |
Mimosa pigra var. pigra |
1 |
| black nightshade |
Solanum nigrum |
1 |
| blackseed plantain |
Plantago rugelii |
2 |
| bladder campion |
Silene latifolia ssp. alba |
2 |
| border privet |
Ligustrum obtusifolium |
3 |
| brahminy blind snake |
Ramphotyphlops braminus |
1 |
| branched broomrape |
Orobanche ramosa |
1 |
| Brazilian peppertree |
Schinus terebinthifolius |
1 |
| Brazilian waterweed |
Egeria densa |
1 |
| brightblue speedwell |
Veronica serpyllifolia ssp. humifusa |
3 |
| bristly foxtail |
Setaria verticillata |
2 |
| bristly mallow |
Modiola caroliniana |
3 |
| British yellowhead |
Inula britannica |
6 |
| broadleaf dock |
Rumex obtusifolius |
3 |
| broadleaf filaree |
Erodium botrys |
2 |
| broadleaf plantain |
Plantago major |
6 |
| brown knapweed |
Centaurea jacea |
3 |
| brown-beard rice |
Oryza rufipogon |
1 |
| buckhorn plantain |
Plantago coronopus |
2 |
| buckhorn plantain |
Plantago lanceolata |
4 |
| buffalobur |
Solanum rostratum |
6 |
| buffelgrass |
Pennisetum ciliare |
1 |
| bulbous bluegrass |
Poa bulbosa |
4 |
| bull cottonthistle |
Onopordum tauricum |
3 |
| bull mallow |
Malva nicaeensis |
4 |
| bull thistle |
Cirsium vulgare |
6 |
| burning nettle |
Urtica urens |
2 |
| buttercup oxalis |
Oxalis pes-caprae |
3 |
| butterfly milkweed |
Asclepias tuberosa |
2 |
| calden |
Prosopis caldenia |
4 |
| California blackberry |
Rubus ursinus |
3 |
| California broomrape |
Orobanche californica |
1 |
| California false-hellebore |
Veratrum californicum |
2 |
| California nettle |
Urtica dioica ssp. gracilis |
2 |
| California privet |
Ligustrum ovalifolium |
1 |
| Canada bluegrass |
Poa compressa |
6 |
| Canada goldenrod |
Solidago canadensis |
2 |
| Canada thistle |
Cirsium arvense |
11 |
| canarygrass |
Phalaris canariensis |
1 |
| Cape jasmine |
Gardenia jasminoides |
1 |
| Cape-tulip |
Moraea knersvlaktensis |
2 |
| Cape-tulip |
Moraea pallida |
2 |
| Cape-tulip |
Moraea schlechteri |
3 |
| capeweed |
Arctotheca calendula |
1 |
| Carolina geranium |
Geranium carolinianum |
4 |
| carpetweed |
Mollugo verticillata |
4 |
| carrotwood |
Cupaniopsis anacardioides |
5 |
| catchweed bedstraw |
Galium aparine |
3 |
| catclaw mimosa |
Mimosa pellita |
1 |
| catnip |
Nepeta cataria |
2 |
| cattail millet |
Setaria glauca |
6 |
| cheatgrass |
Bromus tectorum |
14 |
| cherry plum |
Prunus cerasifera |
3 |
| chicory |
Cichorium intybus |
2 |
| chinaberry |
Melia azedarach |
9 |
| Chinese privet |
Ligustrum sinense |
1 |
| Chinese silvergrass |
Miscanthus sinensis |
7 |
| Chinese tallowtree |
Triadica sebifera |
5 |
| Chinese thorn-apple |
Datura quercifolia |
2 |
| chocolate vine |
Akebia quinata |
1 |
| churqui |
Prosopis ferox |
3 |
| cinnabar moth |
Tyria jacobaeae |
1 |
| cluster dock |
Rumex conglomeratus |
1 |
| coat buttons |
Tridax procumbens |
2 |
| cockspur grass |
Echinochloa spp. |
1 |
| cogongrass |
Imperata cylindrica |
17 |
| coltsfoot |
Tussilago farfara |
7 |
| common burdock |
Arctium minus |
2 |
| common cattail |
Typha latifolia |
2 |
| common chickweed |
Stellaria media |
4 |
| common cocklebur |
Xanthium strumarium |
3 |
| common cordgrass |
Spartina anglica |
1 |
| common crupina |
Crupina vulgaris |
1 |
| common frogbit |
Hydrocharis morsus-ranae |
2 |
| common groundsel |
Senecio vulgaris |
2 |
| common mallow |
Malva neglecta |
7 |
| common mediterraneangrass |
Schismus barbatus |
2 |
| common milkweed |
Asclepias syriaca |
1 |
| common mullein |
Verbascum thapsus |
4 |
| common periwinkle |
Vinca minor |
8 |
| common pokeweed |
Phytolacca americana |
3 |
| common purslane |
Portulaca oleracea |
11 |
| common ragweed |
Ambrosia artemisiifolia |
1 |
| common reed |
Phragmites australis |
12 |
| common sunflower |
Helianthus annuus |
4 |
| common teasel |
Dipsacus fullonum |
4 |
| common valerian |
Valeriana officinalis |
5 |
| common yarrow |
Achillea millefolium |
4 |
| coral ardisia |
Ardisia crenata |
1 |
| cordgrass |
Spartina spp. |
2 |
| corn buttercup |
Ranunculus arvensis |
2 |
| corn speedwell |
Veronica arvensis |
3 |
| corn spurry |
Spergula arvensis |
1 |
| Cornish mallow |
Lavatera cretica |
5 |
| coyote willow |
Salix exigua |
1 |
| crabgrass |
Digitaria spp. |
1 |
| creeping bentgrass |
Agrostis stolonifera |
1 |
| creeping buttercup |
Ranunculus repens |
8 |
| creeping woodsorrel |
Oxalis corniculata |
4 |
| cressleaf groundsel |
Packera glabella |
3 |
| crested latesummer mint |
Elsholtzia ciliata |
5 |
| crimson fountaingrass |
Pennisetum setaceum |
5 |
| crimson woodsorrel |
Oxalis incarnata |
1 |
| croftonweed |
Ageratina adenophora |
1 |
| crowfootgrass |
Dactyloctenium aegyptium |
1 |
| crownvetch |
Securigera varia |
2 |
| crupina |
Crupina crupinastrum |
1 |
| cultivated knotweed |
Persicaria wallichii |
3 |
| cup rosinweed |
Silphium perfoliatum |
5 |
| curly dock |
Rumex crispus |
3 |
| curlyleaf pondweed |
Potamogeton crispus |
2 |
| cutleaf blackberry |
Rubus laciniatus |
2 |
| cutleaf evening-primrose |
Oenothera laciniata |
3 |
| cutleaf geranium |
Geranium dissectum |
3 |
| cutleaf nightshade |
Solanum triflorum |
3 |
| cutleaf teasel |
Dipsacus laciniatus |
3 |
| cypress spurge |
Euphorbia cyparissias |
3 |
| dallisgrass |
Paspalum dilatatum |
2 |
| Dalmatian toadflax |
Linaria dalmatica |
4 |
| dalmatian toadflax |
Linaria dalmatica ssp. dalmatica |
4 |
| damesrocket |
Hesperis matronalis |
5 |
| dandelion |
Taraxacum officinale |
6 |
| dense mistletoe |
Phoradendron densum |
1 |
| denseflower cordgrass |
Spartina densiflora |
2 |
| desert lovegrass |
Eragrostis pectinacea var. miserrima |
1 |
| devil's-claw |
Proboscidea louisianica |
4 |
| devils beggarticks |
Bidens frondosa |
3 |
| diffuse knapweed |
Centaurea diffusa |
1 |
| dog rose |
Rosa canina |
1 |
| dog-strangling vine, European swallowwort |
Cynanchum rossicum |
4 |
| doubleclaw |
Proboscidea parviflora |
2 |
| Douglas iris |
Iris douglasiana |
2 |
| dovefoot geranium |
Geranium molle |
4 |
| drug fumitory |
Fumaria officinalis |
2 |
| duck-lettuce |
Ottelia alismoides |
7 |
| ducksalad |
Heteranthera limosa |
2 |
| dwarf honeysuckle |
Lonicera xylosteum |
5 |
| earleaf nightshade |
Solanum mauritianum |
4 |
| early watergrass |
Echinochloa oryzoides |
2 |
| eben tree |
Dacryodes edulis |
1 |
| edible fig |
Ficus carica |
3 |
| Egyptian Thorn |
Acacia nilotica |
1 |
| elmleaf blackberry |
Rubus ulmifolius |
2 |
| English hawthorn |
Crataegus monogyna |
2 |
| English ivy |
Hedera helix |
6 |
| European alder |
Alnus glutinosa |
6 |
| European barberry |
Berberis vulgaris |
4 |
| European beachgrass |
Ammophila arenaria |
2 |
| European buckthorn |
Rhamnus cathartica |
6 |
| European mistletoe |
Viscum album |
2 |
| European pepperwort |
Marsilea quadrifolia |
2 |
| European privet |
Ligustrum vulgare |
8 |
| European waterstarwort |
Callitriche stagnalis |
5 |
| fall panicum |
Panicum dichotomiflorum |
5 |
| false chamomile |
Tripleurospermum perforatum |
2 |
| fanwort |
Cabomba caroliniana |
2 |
| feather fingergrass |
Chloris virgata |
1 |
| feathertop |
Pennisetum villosum |
1 |
| fiddleleaf dock |
Rumex pulcher |
1 |
| field bindweed |
Convolvulus arvensis |
3 |
| field madder |
Sherardia arvensis |
3 |
| field pansy |
Viola bicolor |
2 |
| field pennycress |
Thlaspi arvense |
5 |
| field pepperweed |
Lepidium campestre |
2 |
| field sandbur |
Cenchrus spinifex |
1 |
| flowering rush |
Butomus umbellatus |
8 |
| foxglove |
Digitalis purpurea |
1 |
| foxtail barley |
Hordeum jubatum |
1 |
| foxtail millet |
Setaria italica |
2 |
| foxtail pricklegrass |
Crypsis alopecuroides |
2 |
| Fremont's deathcamas |
Zigadenus fremontii |
1 |
| fringed willowherb |
Epilobium ciliatum ssp. ciliatum |
2 |
| fumitory |
Fumaria spp. |
1 |
| garden loosestrife |
Lysimachia vulgaris |
3 |
| garlic mustard |
Alliaria petiolata |
13 |
| Geraldton carnation weed |
Euphorbia terracina |
1 |
| giant foxtail |
Setaria faberi |
8 |
| giant hogweed |
Heracleum mantegazzianum |
13 |
| giant mealie witchweed |
Striga forbesii |
1 |
| giant reed |
Arundo donax |
5 |
| giant salvinia |
Salvinia molesta |
2 |
| giant sensitiveplant |
Mimosa diplotricha |
1 |
| glossy buckthorn |
Frangula alnus |
7 |
| glossy privet |
Ligustrum lucidum |
3 |
| goatsrue |
Galega officinalis |
3 |
| Goodding's willow |
Salix gooddingii |
1 |
| goosegrass |
Eleusine indica |
9 |
| greater celandine |
Chelidonium majus |
6 |
| green foxtail |
Setaria viridis |
6 |
| ground ivy |
Glechoma hederacea |
5 |
| hairy buttercup |
Ranunculus sardous |
3 |
| hairy catchfly |
Silene dichotoma |
2 |
| hairy galinsoga |
Galinsoga ciliata |
3 |
| hairy galinsoga |
Galinsoga quadriradiata |
2 |
| hairy nightshade |
Solanum physalifolium |
4 |
| hairy nightshade |
Solanum villosum |
2 |
| hairy vetch |
Vicia villosa |
1 |
| hairy willowherb |
Epilobium hirsutum |
5 |
| hardgrass |
Sclerochloa dura |
2 |
| hedge bindweed |
Calystegia sepium |
5 |
| hemp dogbane |
Apocynum cannabinum |
7 |
| hemp sesbania |
Sesbania exaltata |
5 |
| henbit |
Lamium amplexicaule |
5 |
| herb-robert |
Geranium robertianum |
3 |
| high mallow |
Malva sylvestris |
3 |
| Himalaya blackberry |
Rubus armeniacus |
2 |
| honeyvine swallowwort |
Cynanchum laeve |
3 |
| Hooker's evening primrose |
Oenothera elata ssp. hookeri |
2 |
| horehound |
Marrubium peregrinum |
1 |
| horehound |
Marrubium spp. |
1 |
| horse purslane |
Trianthema portulacastrum |
3 |
| horse thistle |
Onopordum acaulon |
2 |
| horsenettle |
Solanum carolinense |
7 |
| horseweed |
Conyza canadensis |
7 |
| hydrilla |
Hydrilla verticillata |
2 |
| hyssop loosestrife |
Lythrum hyssopifolium |
1 |
| ice cream bean |
Inga edulis |
1 |
| Illyrian cottonthistle |
Onopordum illyricum |
2 |
| Indian tobacco |
Nicotiana quadrivalvis |
2 |
| Indiantobacco |
Lobelia inflata |
1 |
| indigobush |
Amorpha fruticosa |
3 |
| Italian ryegrass |
Festuca perennis |
3 |
| ivyleaf morningglory |
Ipomoea hederacea |
7 |
| Japanese barberry |
Berberis thunbergii |
11 |
| Japanese climbing fern |
Lygodium japonicum |
1 |
| Japanese dodder |
Cuscuta japonica |
6 |
| Japanese hedgeparsley |
Torilis japonica |
4 |
| Japanese honeysuckle |
Lonicera japonica |
11 |
| Japanese hop |
Humulus japonicus |
5 |
| Japanese knotweed |
Fallopia japonica |
18 |
| Japanese privet |
Ligustrum japonicum |
1 |
| Japanese red pine |
Pinus densiflora |
1 |
| Japanese sedge |
Carex kobomugi |
4 |
| Japanese spiraea |
Spiraea japonica |
4 |
| Japanese stiltgrass |
Microstegium vimineum |
12 |
| Jerusalem artichoke |
Helianthus tuberosus |
3 |
| jetbead |
Rhodotypos scandens |
1 |
| jimsonweed |
Datura stramonium |
16 |
| johnsongrass |
Sorghum halepense |
3 |
| jointed goatgrass |
Aegilops cylindrica |
3 |
| junglerice |
Echinochloa colona |
1 |
| juniper mistletoe |
Phoradendron juniperinum |
1 |
| Kentucky bluegrass |
Poa pratensis |
3 |
| Kerner's dock |
Rumex kerneri |
4 |
| kiawe |
Prosopis pallida |
2 |
| kikuyugrass |
Pennisetum clandestinum |
3 |
| knotgrass |
Paspalum distichum |
2 |
| knotweed |
Polygonum spp. |
5 |
| Korean lespedeza |
Kummerowia stipulacea |
5 |
| kudzu |
Pueraria montana var. lobata |
2 |
| kudzu |
Pueraria spp. |
1 |
| ladysthumb |
Persicaria maculosa |
1 |
| Lamarck's bedstraw |
Galium divaricatum |
2 |
| lambsquarters |
Chenopodium album |
3 |
| large crabgrass |
Digitaria sanguinalis |
2 |
| lata |
Prosopis torquata |
3 |
| leafy spurge |
Euphorbia esula |
13 |
| Lehmann lovegrass |
Eragrostis lehmanniana |
2 |
| leporinum barley |
Hordeum murinum ssp. leporinum |
2 |
| lesser celandine, fig buttercup |
Ficaria verna |
5 |
| limnophila |
Limnophila sessiliflora |
1 |
| little lovegrass |
Eragrostis minor |
1 |
| little mallow |
Malva parviflora |
4 |
| littleseed canarygrass |
Phalaris minor |
3 |
| longflowered veldtgrass |
Ehrharta longiflora |
1 |
| longspine sandbur |
Cenchrus longispinus |
5 |
| Madagascar ragwort |
Senecio madagascariensis |
1 |
| manyflower tobacco |
Nicotiana acuminata var. multiflora |
1 |
| mastuerzo |
Prosopis reptans reptans |
2 |
| meadow campion |
Silene flos-cuculi |
4 |
| meadow deathcamas |
Zigadenus venenosus var. venenosus |
1 |
| Mediterranean gecko |
Hemidactylus turcicus |
1 |
| Mediterranean lovegrass |
Eragrostis barrelieri |
1 |
| Mediterranean sage |
Salvia aethiopis |
3 |
| Mediterranean saltwort |
Salsola vermiculata |
3 |
| medusahead |
Taeniatherum caput-medusae |
3 |
| melaleuca |
Melaleuca quinquenervia |
4 |
| mesquite |
Prosopis castellanosii |
1 |
| mesquite |
Prosopis fiebrigii |
1 |
| mesquite |
Prosopis rojasiana |
3 |
| mesquite |
Prosopis ruizlealii |
1 |
| Mexican fireweed |
Kochia scoparia |
2 |
| Mexican lovegrass |
Eragrostis mexicana ssp. virescens |
2 |
| mexicantea |
Dysphania ambrosioides |
1 |
| Mikania micrantha Survey |
|
47 |
| mile-a-minute |
Mikania micrantha |
2 |
| mile-a-minute weed |
Persicaria perfoliata |
7 |
| milkflower cotoneaster |
Cotoneaster coriaceus |
2 |
| miner's lettuce |
Claytonia perfoliata |
4 |
| miramar weed |
Hygrophila polysperma |
1 |
| Molucca raspberry |
Rubus moluccanus |
1 |
| moneywort |
Lysimachia nummularia |
1 |
| monochoria |
Monochoria vaginalis |
4 |
| Moroccan toadflax |
Linaria maroccana |
1 |
| Morrow's honeysuckle |
Lonicera morrowii |
5 |
| moss vervain |
Glandularia pulchella |
2 |
| moth mullein |
Verbascum blattaria |
5 |
| motherwort |
Leonurus cardiaca |
2 |
| mugwort |
Artemisia vulgaris |
2 |
| mullein |
Verbascum spp. |
1 |
| multiflora rose |
Rosa multiflora |
6 |
| musk thistle |
Carduus nutans |
5 |
| narrowleaf bittercress |
Cardamine impatiens |
5 |
| narrowleaf firethorn |
Pyracantha angustifolia |
1 |
| New Zealand geranium |
Geranium retrorsum |
4 |
| ngaio tree |
Myoporum laetum |
4 |
| nimblewill |
Muhlenbergia schreberi |
1 |
| nodding broomrape |
Orobanche cernua |
1 |
| Norway maple |
Acer platanoides |
5 |
| oakforest woodrush |
Luzula luzuloides |
6 |
| old world climbing fern |
Lygodium microphyllum |
6 |
| onerow yellowcress |
Nasturtium microphyllum |
3 |
| onionweed |
Asphodelus fistulosus |
4 |
| orange cotoneaster |
Cotoneaster franchetii |
1 |
| orangeberry nightshade |
Solanum lanceolatum |
4 |
| orchardgrass |
Dactylis glomerata |
2 |
| oriental bittersweet |
Celastrus orbiculatus |
3 |
| Oriental lady's thumb |
Persicaria longiseta |
3 |
| ornamental jewelweed |
Impatiens glandulifera |
12 |
| osage-orange |
Maclura pomifera |
3 |
| oval-leaf knotweed |
Polygonum arenastrum |
2 |
| Pacific bentgrass |
Agrostis avenacea |
2 |
| Pacific mistletoe |
Phoradendron villosum |
1 |
| pale smartweed |
Persicaria lapathifolia |
1 |
| paleseed plantain |
Plantago virginica |
1 |
| Palmer amaranth |
Amaranthus palmeri |
4 |
| panic veldtgrass |
Ehrharta erecta |
2 |
| pansy |
Viola tricolor |
2 |
| paper-mulberry |
Broussonetia papyrifera |
5 |
| parrot feather milfoil |
Myriophyllum aquaticum |
4 |
| partridgepea |
Chamaecrista fasciculata |
2 |
| Pennsylvania bittercress |
Cardamine pensylvanica |
2 |
| Pennsylvania smartweed |
Polygonum pensylvanicum |
5 |
| pennyroyal |
Mentha pulegium |
1 |
| perennial pepperweed |
Lepidium latifolium |
3 |
| perennial ryegrass |
Lolium perenne |
5 |
| perennial sowthistle |
Sonchus arvensis |
3 |
| perennial veldtgrass |
Ehrharta calycina |
1 |
| perilla mint |
Perilla frutescens |
28 |
| Persian speedwell |
Veronica persica |
2 |
| pineapple-weed |
Matricaria discoidea |
3 |
| pitted morningglory |
Ipomoea lacunosa |
3 |
| poison ryegrass |
Lolium temulentum |
1 |
| poison-hemlock |
Conium maculatum |
3 |
| poverty brome |
Bromus sterilis |
1 |
| Powell amaranth |
Amaranthus powellii |
4 |
| prairie cupgrass |
Eriochloa contracta |
2 |
| prickly lettuce |
Lactuca serriola |
3 |
| prickly sida |
Sida spinosa |
9 |
| princesstree |
Paulownia tomentosa |
2 |
| privet |
Ligustrum spp. |
1 |
| prostrate globe-amaranth |
Gomphrena serrata |
1 |
| prostrate knotweed |
Polygonum aviculare |
1 |
| prostrate pigweed |
Amaranthus blitoides |
5 |
| pterocarpus |
Pterocarpus spp. |
2 |
| punagrass |
Achnatherum brachychaetum |
1 |
| puncturevine |
Tribulus terrestris |
8 |
| purple deadnettle |
Lamium purpureum |
6 |
| purple loosestrife |
Lythrum salicaria |
8 |
| purple nutsedge |
Cyperus rotundus |
1 |
| purple pampasgrass |
Cortaderia jubata |
3 |
| purple robust |
Setaria viridis var. robustapurpurea |
2 |
| purple toadflax |
Linaria purpurea |
2 |
| purple witchweed |
Striga hermonthica |
1 |
| purplestamen mullein |
Verbascum virgatum |
2 |
| quackgrass |
Elymus repens |
5 |
| Queen Anne's lace, wild carrot |
Daucus carota |
6 |
| rabbitfoot polypogon |
Polypogon monspeliensis |
2 |
| rattlesnake brome |
Bromus briziformis |
1 |
| rattlesnake plant |
Calathea crotalifera |
2 |
| red clover |
Trifolium pratense |
5 |
| red sorrel |
Rumex acetosella |
12 |
| red willow |
Salix laevigata |
3 |
| redmaids |
Calandrinia ciliata |
5 |
| redroot pigweed |
Amaranthus retroflexus |
8 |
| redstem filaree |
Erodium cicutarium |
1 |
| reed |
Phragmites spp. |
2 |
| reed canarygrass |
Phalaris arundinacea |
8 |
| reed mannagrass |
Glyceria maxima |
1 |
| rescuegrass |
Bromus catharticus |
1 |
| rhodesgrass |
Chloris gayana |
1 |
| ripgut brome |
Bromus diandrus |
1 |
| Rocky Mountain iris |
Iris missouriensis |
1 |
| rough barnyardgrass |
Echinochloa muricata |
1 |
| rough cinquefoil |
Potentilla norvegica |
4 |
| roughstalk bluegrass |
Poa trivialis |
1 |
| roundleaf geranium |
Geranium rotundifolium |
2 |
| ruscus |
Ruscus spp. |
1 |
| Russian-olive |
Elaeagnus angustifolia |
2 |
| Russian-thistle |
Salsola tragus |
1 |
| rye brome |
Bromus secalinus |
3 |
| sacred bamboo |
Nandina domestica |
1 |
| sacred thorn-apple |
Datura wrightii |
1 |
| Sakhalin knotweed |
Fallopia sachalinensis |
9 |
| saltbush |
Atriplex fera |
2 |
| saltbush |
Atriplex spp. |
3 |
| saltcedar |
Tamarix ramosissima |
1 |
| scarlet gaura |
Gaura coccinea |
1 |
| scarlet pimpernel |
Lysimachia arvensis |
4 |
| Scotch broom |
Cytisus scoparius |
4 |
| Scotch thistle |
Onopordum acanthium |
6 |
| seashore vervain |
Verbena montevidensis |
3 |
| Seaside rose |
Rosa rugosa |
2 |
| seepwillow |
Baccharis salicifolia |
1 |
| sericea lespedeza |
Lespedeza cuneata |
3 |
| sharpleaf groundcherry |
Physalis acutifolia |
2 |
| sharppoint fluvellin |
Kickxia elatine |
5 |
| shepherd's-purse |
Capsella bursa-pastoris |
7 |
| shoebutton ardisia |
Ardisia elliptica |
1 |
| shortfruit stork's bill |
Erodium brachycarpum |
3 |
| showy evening-primrose |
Oenothera speciosa |
2 |
| shrubby St. Johnswort |
Hypericum prolificum |
4 |
| sicklepod |
Senna obtusifolia |
3 |
| silver hairgrass |
Aira caryophyllea |
4 |
| silverleaf cotoneaster |
Cotoneaster pannosus |
2 |
| silverleaf nightshade |
Solanum elaeagnifolium |
3 |
| silversheath knotweed |
Polygonum argyrocoleon |
2 |
| skunk-vine |
Paederia foetida |
2 |
| slender cinquefoil |
Potentilla gracilis |
2 |
| slender false garlic |
Nothoscordum gracile |
4 |
| slender snakecotton |
Froelichia gracilis |
4 |
| slender speedwell |
Veronica filiformis |
1 |
| slenderflower thistle |
Carduus tenuiflorus |
1 |
| small broomrape |
Orobanche minor |
1 |
| small carpetgrass, joint-head grass |
Arthraxon hispidus |
10 |
| smallflower buttercup |
Ranunculus abortivus |
2 |
| smallflower tamarisk |
Tamarix parviflora |
3 |
| smilograss |
Piptatherum miliaceum |
2 |
| smooth bedstraw |
Galium mollugo |
1 |
| smooth brome |
Bromus inermis |
4 |
| smooth crabgrass |
Digitaria ischaemum |
5 |
| smooth groundcherry |
Physalis longifolia var. subglabrata |
2 |
| smooth pigweed |
Amaranthus hybridus |
1 |
| smutgrass |
Sporobolus indicus |
1 |
| sorghum |
Sorghum bicolor |
7 |
| sorghum-almum |
Sorghum almum |
1 |
| South African ragwort |
Senecio inaequidens |
3 |
| southern sandbur |
Cenchrus echinatus |
1 |
| southwestern cupgrass |
Eriochloa acuminata |
1 |
| spiny amaranth |
Amaranthus spinosus |
2 |
| spiny plumeless thistle |
Carduus acanthoides |
2 |
| spiny sowthistle |
Sonchus asper |
3 |
| spinyfruit buttercup |
Ranunculus muricatus |
3 |
| spotted knapweed |
Centaurea stoebe |
1 |
| spotted knapweed |
Centaurea stoebe ssp. micranthos |
12 |
| spreading pellitory |
Parietaria judaica |
2 |
| spreading rush |
Juncus patens |
1 |
| spurge |
Euphorbia humistrata |
3 |
| squirreltail fescue |
Vulpia bromoides |
1 |
| St. Augustinegrass |
Stenotaphrum secundatum |
1 |
| staghorn sumac |
Rhus typhina |
1 |
| star-of-Bethlehem |
Ornithogalum umbellatum |
3 |
| sterile oat |
Avena sterilis |
1 |
| stinging nettle |
Urtica dioica ssp. holosericea |
3 |
| stinkgrass |
Eragrostis cilianensis |
2 |
| stinking chamomile |
Anthemis cotula |
2 |
| stork's bill |
Erodium spp. |
1 |
| sulfur cinquefoil |
Potentilla recta |
4 |
| swamp morningglory |
Ipomoea aquatica |
1 |
| swamp pricklegrass |
Crypsis schoenoides |
2 |
| swamp smartweed |
Persicaria hydropiperoides |
1 |
| sweet granadilla |
Passiflora ligularis |
1 |
| sweetbriar rose |
Rosa eglanteria |
3 |
| Sycamore maple |
Acer pseudoplatanus |
6 |
| Syrian beancaper |
Zygophyllum fabago |
2 |
| Syrian mesquite |
Prosopis farcta |
4 |
| Szechuan pepper corns |
Zanthoxylum spp. |
1 |
| Taiwanese photinia |
Photinia serratifolia |
2 |
| tall fescue |
Festuca arundinacea |
5 |
| tall ironweed |
Vernonia gigantea |
5 |
| tall morningglory |
Ipomoea purpurea |
4 |
| tall vervain |
Verbena bonariensis |
2 |
| tall waterhemp |
Amaranthus tuberculatus |
2 |
| tamarisk |
Tamarix spp. |
1 |
| tanglehead |
Heteropogon contortus |
1 |
| tansy ragwort |
Senecio jacobaea |
4 |
| tansymustard |
Descurainia spp. |
2 |
| Tatarian honeysuckle |
Lonicera tatarica |
6 |
| tawny daylily |
Hemerocallis fulva |
3 |
| Texas filaree |
Erodium texanum |
1 |
| thistle |
Cirsium spp. |
1 |
| three-cornered leek |
Allium triquetrum |
1 |
| threebract loosestrife |
Lythrum tribracteatum |
2 |
| threespike goosegrass |
Eleusine tristachya |
3 |
| Thunberg's geranium |
Geranium thunbergii |
4 |
| timothy |
Phleum pratense |
3 |
| toad rush |
Juncus bufonius |
3 |
| tomatillo groundcherry |
Physalis philadelphica |
3 |
| toothed dock |
Rumex dentatus |
2 |
| toothed spurge |
Euphorbia dentata |
2 |
| tree tobacco |
Nicotiana glauca |
2 |
| tree-of-heaven |
Ailanthus altissima |
16 |
| true forget-me-not |
Myosotis scorpioides |
5 |
| tumble pigweed |
Amaranthus albus |
7 |
| turkeyberry |
Solanum torvum |
3 |
| turnipweed |
Rapistrum rugosum |
6 |
| two-leaf Cape-tulip |
Moraea miniata |
2 |
| velvetleaf |
Abutilon theophrasti |
15 |
| Venice mallow |
Hibiscus trionum |
10 |
| viburnum |
Viburnum spp. |
1 |
| vinegarweed |
Trichostema lanceolatum |
3 |
| Virginia copperleaf |
Acalypha virginica |
2 |
| Virginia pepperweed |
Lepidium virginicum |
2 |
| wall bedstraw |
Galium parisiense |
2 |
| wall rocket |
Diplotaxis tenuifolia |
1 |
| water chestnut |
Trapa spp. |
1 |
| water speedwell |
Veronica anagallis-aquatica |
4 |
| water-bent |
Polypogon viridis |
1 |
| water-chestnut |
Trapa natans |
3 |
| watercress |
Nasturtium officinale |
3 |
| waterhyacinth |
Eichhornia crassipes |
3 |
| waterlettuce |
Pistia stratiotes |
1 |
| waterpoppy |
Hydrocleys nymphoides |
3 |
| wavyleaf gaura |
Gaura sinuata |
1 |
| waxy mannagrass |
Glyceria declinata |
9 |
| weeping lovegrass |
Eragrostis curvula |
1 |
| West Indian nightshade |
Solanum ptycanthum |
2 |
| western salsify |
Tragopogon dubius |
2 |
| western thimbleberry |
Rubus parviflorus |
2 |
| wetland nightshade |
Solanum tampicense |
1 |
| white clover |
Trifolium repens |
4 |
| white horehound |
Marrubium vulgare |
1 |
| white mulberry |
Morus alba |
1 |
| white poplar |
Populus alba |
8 |
| whitebark raspberry |
Rubus leucodermis |
3 |
| whitegrass |
Leersia virginica |
1 |
| whitestem filaree |
Erodium moschatum |
3 |
| wild buckwheat |
Fallopia convolvulus |
9 |
| wild chervil |
Anthriscus sylvestris |
5 |
| wild cucumber |
Echinocystis lobata |
3 |
| wild four-o'clock |
Mirabilis nyctaginea |
2 |
| wild garlic |
Allium vineale |
8 |
| wild mustard |
Sinapis arvensis ssp. arvensis |
4 |
| wild oat |
Avena fatua |
7 |
| wild parsnip |
Pastinaca sativa |
6 |
| wild radish |
Raphanus raphanistrum |
2 |
| wild safflower |
Carthamus oxyacanthus |
2 |
| wild-proso millet |
Panicum miliaceum |
2 |
| windowbox woodsorrel |
Oxalis rubra |
2 |
| wine raspberry |
Rubus phoenicolasius |
5 |
| winged burning bush |
Euonymus alatus |
9 |
| winter creeper |
Euonymus fortunei var. radicans |
1 |
| wirestem muhly |
Muhlenbergia frondosa |
2 |
| witchgrass |
Panicum capillare |
5 |
| witchweed |
Striga asiatica |
3 |
| witchweed |
Striga euphrasioides |
1 |
| wood whitlowgrass |
Draba nemorosa |
4 |
| woolly cupgrass |
Eriochloa villosa |
5 |
| yellow bluestem |
Bothriochloa ischaemum var. songarica |
6 |
| yellow floatingheart |
Nymphoides peltata |
1 |
| yellow glandweed |
Parentucellia viscosa |
2 |
| yellow hornpoppy |
Glaucium flavum |
4 |
| yellow nutsedge |
Cyperus esculentus |
8 |
| yellow rocket |
Barbarea vulgaris |
5 |
| yellow sweetclover |
Melilotus officinalis |
4 |
| yellow toadflax |
Linaria vulgaris |
3 |
| yellow wall bedstraw |
Galium murale |
2 |
| yellow woodsorrel |
Oxalis stricta |
4 |
| yellowflag iris |
Iris pseudacorus |
10 |
