| African mustard |
Brassica tournefortii |
1 |
| agave |
Agave spp. |
1 |
| air-potato |
Dioscorea bulbifera |
8 |
| alfalfa |
Medicago sativa |
1 |
| alkali desertparsley |
Lomatium caruifolium |
1 |
| alligatorweed |
Alternanthera philoxeroides |
1 |
| alpine woodfern |
Dryopteris wallichiana |
2 |
| amberique-bean |
Strophostyles helvola |
2 |
| American burnweed |
Erechtites hieraciifolius |
1 |
| American sweetflag |
Acorus calamus |
1 |
| apple-of-Peru |
Nicandra physalodes |
1 |
| arrowleaved monochoria |
Monochoria hastata |
1 |
| Asiatic dayflower |
Commelina communis |
2 |
| asparagus |
Asparagus officinalis |
1 |
| Australian saltbush |
Atriplex semibaccata |
2 |
| babysbreath |
Gypsophila paniculata |
1 |
| bagpod |
Sesbania vesicaria |
1 |
| beardlip penstemon |
Penstemon barbatus |
1 |
| beautiful fleabane |
Erigeron formosissimus |
1 |
| Benghal dayflower |
Commelina benghalensis |
3 |
| bigpod sesbania |
Sesbania herbacea |
1 |
| bigroot morningglory |
Ipomoea pandurata |
1 |
| birdsfoot trefoil |
Lotus corniculatus |
1 |
| bittersweet nightshade |
Solanum dulcamara |
1 |
| Black dog-strangling vine, black swallowwort |
Cynanchum louiseae |
2 |
| black henbane |
Hyoscyamus niger |
1 |
| black senna |
Seymeria cassioides |
3 |
| black spleenwort |
Asplenium adiantum-nigrum |
1 |
| blackhead fleabane |
Erigeron melanocephalus |
2 |
| blackseed plantain |
Plantago rugelii |
2 |
| bladder campion |
Silene vulgaris |
1 |
| blanketflower |
Gaillardia aristata |
1 |
| bloodroot |
Sanguinaria canadensis |
1 |
| British yellowhead |
Inula britannica |
6 |
| broadleaf arnica |
Arnica latifolia |
1 |
| broadleaf dock |
Rumex obtusifolius |
1 |
| broadleaf plantain |
Plantago major |
1 |
| bulblet bladderfern |
Cystopteris bulbifera |
2 |
| bull thistle |
Cirsium vulgare |
4 |
| bullnettle |
Cnidoscolus stimulosus |
1 |
| bur chervil |
Anthriscus caucalis |
1 |
| burcucumber |
Sicyos angulatus |
1 |
| buttercup oxalis |
Oxalis pes-caprae |
1 |
| Cainville thistle |
Cirsium calcareum |
1 |
| Canada thistle |
Cirsium arvense |
2 |
| cape ivy |
Delairea odorata |
3 |
| Carolina geranium |
Geranium carolinianum |
2 |
| Carolina redroot |
Lachnanthes caroliana |
1 |
| chamber bitter |
Phyllanthus urinaria |
1 |
| chicory |
Cichorium intybus |
3 |
| Chinese yam |
Dioscorea polystachya |
2 |
| clasping pepperweed |
Lepidium perfoliatum |
1 |
| coltsfoot |
Tussilago farfara |
1 |
| common bean |
Phaseolus vulgaris |
2 |
| common burdock |
Arctium minus |
4 |
| common chickweed |
Stellaria media |
1 |
| common chickweed |
Stellaria pallida |
1 |
| common cocklebur |
Xanthium strumarium |
2 |
| common comfrey |
Symphytum officinale |
1 |
| common crupina |
Crupina vulgaris |
1 |
| common milkweed |
Asclepias syriaca |
3 |
| common mullein |
Verbascum thapsus |
1 |
| common pokeweed |
Phytolacca americana |
1 |
| common St. Johnswort |
Hypericum perforatum |
3 |
| common sunflower |
Helianthus annuus |
2 |
| common teasel |
Dipsacus fullonum |
3 |
| common vetch |
Vicia sativa |
1 |
| corn chamomile |
Anthemis arvensis |
1 |
| corn spurry |
Spergula arvensis |
1 |
| crimson pitcherplant |
Sarracenia leucophylla |
5 |
| crimsoneyed rosemallow |
Hibiscus moscheutos |
1 |
| crystalline iceplant |
Mesembryanthemum crystallinum |
1 |
| curly dock |
Rumex crispus |
1 |
| curlyleaf pondweed |
Potamogeton crispus |
3 |
| cutleaf burnweed |
Erechtites glomeratus |
1 |
| cutleaf daisy |
Erigeron compositus |
1 |
| cutleaf geranium |
Geranium dissectum |
2 |
| Dalmatian toadflax |
Linaria dalmatica |
4 |
| dandelion |
Taraxacum spp. |
1 |
| diffuse knapweed |
Centaurea diffusa |
6 |
| dog-strangling vine, European swallowwort |
Cynanchum rossicum |
1 |
| Drummond's rockcress |
Arabis drummondii |
1 |
| Dyer's woad |
Isatis tinctoria |
2 |
| early wintercress |
Barbarea verna |
1 |
| European stinging nettle |
Urtica dioica ssp. dioica |
1 |
| false chamomile |
Tripleurospermum perforatum |
2 |
| Fendler's rockcress |
Arabis fendleri |
1 |
| fennel |
Foeniculum vulgare |
1 |
| field bindweed |
Convolvulus arvensis |
4 |
| field dodder |
Cuscuta pentagona |
1 |
| field horsetail |
Equisetum arvense |
1 |
| field marigold |
Calendula arvensis |
1 |
| field pennycress |
Thlaspi arvense |
2 |
| field pepperweed |
Lepidium campestre |
2 |
| fivenerve helianthella |
Helianthella quinquenervis |
1 |
| floating bladderwort |
Utricularia inflata |
1 |
| floating pennywort |
Hydrocotyle ranunculoides |
1 |
| Florida betony |
Stachys floridana |
2 |
| Fuller's teasel |
Dipsacus sativus |
1 |
| garden orach |
Atriplex hortensis |
1 |
| garlic mustard |
Alliaria petiolata |
3 |
| giant hogweed |
Heracleum mantegazzianum |
4 |
| giant reed |
Arundo donax |
6 |
| giant salvinia |
Salvinia molesta |
3 |
| greater celandine |
Chelidonium majus |
1 |
| Greater Florida spurge |
Euphorbia floridana |
4 |
| greater swinecress |
Coronopus squamatus |
1 |
| ground ivy |
Glechoma hederacea |
2 |
| Gunnison County rockcress |
Arabis pallidifolia |
1 |
| hairy fleabane |
Conyza bonariensis |
1 |
| hairy purslane |
Portulaca villosa |
1 |
| hairy whitetop |
Cardaria pubescens |
1 |
| hawkweeds |
Hieracium spp. |
3 |
| hedgeparsley |
Torilis arvensis |
1 |
| hemp dogbane |
Apocynum cannabinum |
1 |
| hoary cress |
Lepidium draba |
2 |
| hooded pitcherplant |
Sarracenia minor |
4 |
| horned dandelion |
Taraxacum ceratophorum |
1 |
| horsenettle |
Solanum carolinense |
1 |
| horseweed |
Conyza canadensis |
2 |
| houndstongue |
Cynoglossum officinale |
1 |
| hydrilla |
Hydrilla verticillata |
1 |
| Indianpipe |
Monotropa uniflora |
1 |
| Italian hawksbeard |
Crepis bursifolia |
1 |
| ivyleaf morningglory |
Ipomoea hederacea |
1 |
| Jamaican nightshade |
Solanum jamaicense |
2 |
| Japanese dodder |
Cuscuta japonica |
3 |
| Jerusalem artichoke |
Helianthus tuberosus |
3 |
| lanceleaf arrowhead |
Sagittaria lancifolia |
1 |
| large mountain fleabane |
Erigeron coulteri |
1 |
| leafy spurge |
Euphorbia esula |
2 |
| lesser celandine, fig buttercup |
Ficaria verna |
1 |
| lesser hawkbit |
Leontodon taraxacoides |
1 |
| lesser swinecress |
Coronopus didymus |
1 |
| little mallow |
Malva parviflora |
2 |
| mallow bindweed |
Convolvulus althaeoides |
1 |
| Malta starthistle |
Centaurea melitensis |
1 |
| Mexican fireweed |
Kochia scoparia |
1 |
| miniature lupine |
Lupinus bicolor |
1 |
| mountain goldenbanner |
Thermopsis montana |
1 |
| musk thistle |
Carduus nutans |
2 |
| narrow swordfern |
Nephrolepis cordifolia |
1 |
| narrowleaf bittercress |
Cardamine impatiens |
1 |
| narrowleaf hawksbeard |
Crepis tectorum |
1 |
| narrowleaf spring-beauty |
Claytonia virginica |
1 |
| nightflowering catchfly |
Silene noctiflora |
1 |
| nipplefruit |
Solanum mammosum |
2 |
| northern bedstraw |
Galium boreale |
1 |
| notched cowpea |
Vigna marina |
1 |
| Nuttall povertyweed |
Monolepis nuttalliana |
1 |
| Nuttall's sunflower |
Helianthus nuttallii |
1 |
| onions |
Allium spp. |
2 |
| orbicular whitetop |
Lepidium chalepense |
1 |
| ornamental jewelweed |
Impatiens glandulifera |
3 |
| oxeye daisy |
Leucanthemum vulgare |
2 |
| Pacific poison-oak |
Toxicodendron diversilobum |
1 |
| painted poinsettia |
Euphorbia cyathophora |
1 |
| pale agoseris |
Agoseris glauca |
1 |
| Paraguay starbur |
Acanthospermum australe |
1 |
| Parry's arnica |
Arnica parryi |
1 |
| peanut |
Arachis hypogaea |
2 |
| perennial pepperweed |
Lepidium latifolium |
1 |
| perennial sowthistle |
Sonchus arvensis |
2 |
| perilla mint |
Perilla frutescens |
2 |
| poison-hemlock |
Conium maculatum |
2 |
| poverty sumpweed |
Iva axillaris |
1 |
| prickly lettuce |
Lactuca serriola |
5 |
| prostrate pigweed |
Amaranthus blitoides |
1 |
| purple moonflower |
Ipomoea turbinata |
2 |
| purple pitcherplant |
Sarracenia purpurea |
5 |
| purple starthistle |
Centaurea calcitrapa |
1 |
| Queen Anne's lace, wild carrot |
Daucus carota |
1 |
| rapeseed |
Brassica napus |
1 |
| red sorrel |
Rumex acetosella |
2 |
| robust horsenettle |
Solanum dimidiatum |
1 |
| rocket |
Hesperis spp. |
1 |
| Rollins' twinpod |
Physaria rollinsii |
2 |
| rose clover |
Trifolium hirtum |
1 |
| roundleaf bluet |
Houstonia procumbens |
2 |
| roundleaf sundew |
Drosera rotundifolia |
1 |
| rush skeletonweed |
Chondrilla juncea |
1 |
| Russian knapweed |
Rhaponticum repens |
2 |
| Russian-thistle |
Salsola tragus |
3 |
| saltmarsh morningglory |
Ipomoea sagittata |
1 |
| sanddune wallflower |
Erysimum capitatum |
1 |
| Santa Cruz tarplant |
Holocarpha macradenia |
1 |
| savannah meadowbeauty |
Rhexia alifanus |
1 |
| Scotch thistle |
Onopordum acanthium |
2 |
| sensitiveplant |
Mimosa pudica |
1 |
| sericea lespedeza |
Lespedeza cuneata |
3 |
| shepherd's-purse |
Capsella bursa-pastoris |
1 |
| shining pepperweed |
Lepidium nitidum var. nitidum |
1 |
| shortleaf rose gentian |
Sabatia brevifolia |
2 |
| shortray fleabane |
Erigeron lonchophyllus |
1 |
| showy evening-primrose |
Oenothera speciosa |
2 |
| showy rattlebox |
Crotalaria spectabilis |
2 |
| shrubby lespedeza |
Lespedeza bicolor |
3 |
| slender aster |
Symphyotrichum divaricatum |
1 |
| slender rose gentian |
Sabatia campanulata |
1 |
| slenderflower thistle |
Carduus tenuiflorus |
1 |
| small broomrape |
Orobanche minor |
1 |
| smallflower galinsoga |
Galinsoga parviflora |
3 |
| smooth bedstraw |
Galium mollugo |
2 |
| smooth blue aster |
Symphyotrichum laeve var. laeve |
1 |
| spiny amaranth |
Amaranthus spinosus |
2 |
| spoonleaf sundew |
Drosera intermedia |
8 |
| spoonleaf yellow loosestrife |
Lysimachia mauritiana |
1 |
| spotted joe pye weed |
Eupatoriadelphus maculatus |
1 |
| spotted knapweed |
Centaurea stoebe ssp. micranthos |
5 |
| spotted spurge |
Euphorbia maculata |
2 |
| spotted St. Johnswort |
Hypericum punctatum |
1 |
| spotted water hemlock |
Cicuta maculata var. angustifolia |
1 |
| Sprenger's asparagus fern |
Asparagus aethiopicus |
2 |
| squarrose knapweed |
Centaurea virgata |
1 |
| St. Peterswort |
Hypericum crux-andreae |
1 |
| sticky chickweed |
Cerastium glomeratum |
1 |
| sticky gilia |
Gilia pinnatifida |
1 |
| stinging nettle |
Urtica dioica ssp. holosericea |
1 |
| stinkwort |
Dittrichia graveolens |
1 |
| sulfur cinquefoil |
Potentilla recta |
1 |
| sulphur knapweed |
Centaurea sulphurea |
1 |
| swamp smartweed |
Persicaria hydropiperoides |
4 |
| tall lettuce |
Lactuca canadensis |
1 |
| tawny daylily |
Hemerocallis fulva |
1 |
| telegraphplant |
Heterotheca grandiflora |
1 |
| thistle |
Cirsium spp. |
2 |
| timber milkvetch |
Astragalus miser |
1 |
| tower-mustard |
Arabis glabra |
2 |
| turkeyberry |
Solanum torvum |
1 |
| turnipweed |
Rapistrum rugosum |
1 |
| velvetleaf |
Abutilon theophrasti |
2 |
| Venus flytrap |
Dionaea muscipula |
1 |
| water knotweed |
Polygonum amphibium |
6 |
| waterpod |
Hydrolea quadrivalvis |
1 |
| western marsh cudweed |
Gnaphalium palustre |
1 |
| western salsify |
Tragopogon dubius |
1 |
| western sweetvetch |
Hedysarum occidentale |
1 |
| whisk fern |
Psilotum nudum |
1 |
| white heath aster |
Symphyotrichum ericoides var. ericoides |
1 |
| white panicle aster |
Symphyotrichum lanceolatum |
1 |
| white vervain |
Verbena urticifolia |
1 |
| whiteflower leafcup |
Polymnia canadensis |
1 |
| wild celery |
Cyclospermum leptophyllum |
1 |
| wild garlic |
Allium vineale |
5 |
| wild onion |
Allium canadense |
2 |
| wild parsnip |
Pastinaca sativa |
1 |
| wild radish |
Raphanus raphanistrum |
2 |
| willowleaf lettuce |
Lactuca saligna |
1 |
| winged yam |
Dioscorea alata |
2 |
| woodland groundsel |
Senecio sylvaticus |
1 |
| Wyoming Indian paintbrush |
Castilleja linariifolia |
5 |
| yellow fieldcress |
Rorippa sylvestris |
2 |
| yellow pitcherplant |
Sarracenia flava |
3 |
| yellow rocket |
Barbarea vulgaris |
1 |
| yellow starthistle |
Centaurea solstitialis |
4 |
| yerba de hierro |
Melasma melampyroides |
3 |
