
| Common name | Scientific name |
|---|---|
|
alder buckthorn | Rhamnus frangula |
| alfalfa | Medicago sativa |
| aloe - A. barbadensis | Aloe barbadensis |
| alsike clover | Trifolium hybridum |
| amaryllis (A. belledonna) | Amaryllis belladonna |
| Amaryllis (A. vittata). | Amaryllis vittata |
| American elder | Sambucus canadensis |
| American holly | Ilex opaca |
| American mistletoe | Phoradendron flavescens |
| angel's trumpet | Datura innoxia |
| Astragalus (A. adsurgens) | Astragalus adsurgens |
| Astragalus (A. lentiginosus) | Astragalus lentiginosus |
| Australian umbrella tree | Brassaia actinophylla |
| autumn crocus | Colchicum autumnale |
| avocado | Persea americana |
| bird rape | Brassica campestris |
| black cherry | Prunus serotina |
| black henbane | Hyoscyamus niger |
| black locust | Robinia pseudoacacia |
| black nightshade | Solanum nigrum |
| black oak | Quercus velutina |
| black walnut | Juglans nigra |
| black-eyed Susan | Rudbeckia serotina |
| blue cardinalflower | Lobelia siphilitica |
| blue cohosh | Caulophyllum thalictroides |
| blue flag iris | Iris versicolor |
| blueweed | Echium vulgare |
| bog-laurel | Kalmia polifolia |
| bracken | Pteridium aquilinum |
| broad bean | Vicia faba |
| broom snakeweed | Gutierrezia sarothrae |
| buckwheat | Fagopyrum esculentum |
| bulbous buttercup | Ranunculus bulbosus |
| bur buttercup | Ceratocephalus testiculatus |
| Burke's lupine | Lupinus burkei |
| burningbush | Euonymus atropurpureus |
| caladium | Caladium bicolor |
| California bluebell | Phacelia campanularia |
| California rose-bay | Rhododendron macrophyllum |
| Canada nettle | Laportea canadensis |
| Canada yew | Taxus canadensis |
| Canadian milk-vetch | Astragalus canadensis |
| candalabra aloe | Aloe arborescens |
| candelabra-cactus | Euphorbia lactea |
| caper spurge | Euphorbia lathyris |
| cardinalflower | Lobelia cardinalis |
| castor-bean | Ricinus communis |
| celery-leaved buttercup | Ranunculus sceleratus |
| Chinese-lantern | Physalis alkekengi |
| chives | Allium schoenoprasum |
| chrysanthemum | Chrysanthemum indicum |
| climbing nightshade | Solanum dulcamara |
| cocklebur | Xanthium strumarium |
| Colorado rubberweed | Hymenoxys richardsonii |
| common comfrey | Symphytum officinale |
| common groundsel | Senecio vulgaris |
| common hop | Humulus lupulus |
| common milkweed | Asclepias syriaca |
| common privet | Ligustrum vulgare |
| common vetch | Vicia sativa |
| corn poppy | Papaver rhoeas |
| croton | Codiaeum variegatum |
| crown-of-thorns | Euphorbia milii |
| cut-leaved coneflower | Rudbeckia laciniata |
| cyclamen | Cyclamen persicum |
| cypress spurge | Euphorbia cyparissias |
| daffodil | Narcissus pseudonarcissus |
| death camas | Zigadenus venenosus |
| Devil's-backbone | Kalanchoe daigremontiana |
| dumbcane | Dieffenbachia bausei |
| Dutchman's-breeches | Dicentra cucullaria |
| eastern whorled milkweed | Asclepias verticillata |
| English bluebell | Hyacinthoides nonscripta |
| English holly | Ilex aquifolium |
| English ivy | Hedera helix |
| English yew | Taxus baccata |
| entire-leaved groundsel | Senecio integerrimus |
| European buckthorn | Rhamnus cathartica |
| European elder | Sambucus nigra |
| European spindletree | Euonymus europaeus |
| false hellebore | Veratrum viride |
| false ragweed | Iva xanthifolia |
| February daphne | Daphne mezereum |
| fiddleneck | Amsinckia intermedia |
| field horsetail | Equisetum arvense |
| five-hooked bassia | Bassia hyssopifolia |
| flamingo lily | Anthurium andraeanum |
| fly honeysuckle | Lonicera xylosteum |
| foxglove | Digitalis purpurea |
| garden-sorrel | Rumex acetosa |
| garland daphne | Daphne cneorum |
| garlic | Allium sativum |
| gas plant | Dictamnus albus |
| giant dumbcane | Dieffenbachia amoena |
| giant hogweed | Heracleum mantegazzianum |
| glory lily | Gloriosa superba |
| golden-bean | Thermopsis rhombifolia |
| golden-chain | Laburnum anagyroides |
| golden-trumpet | Allamanda cathartica |
| grass pea | Lathyrus sativus |
| greasewood | Sarcobatus vermiculatus |
| greater celandine | Chelidonium majus |
| green tansy mustard | Descurainia pinnata |
| ground-cherry | Physalis peruviana |
| ground-ivy | Glechoma hederacea |
| Guelder-rose | Viburnum opulus |
| hairy vetch | Vicia villosa |
| heart-leaved philodendron | Philodendron scandens |
| hemp dogbane | Apocynum cannabinum |
| horse-chestnut | Aesculus hippocastanum |
| horseradish | Armoracia rusticana |
| hound's tongue | Cynoglossum officinale |
| hydrangea | Hydrangea macrophylla |
| Iceland poppy | Papaver nudicaule |
| Indian mustard | Brassica juncea |
| Indian-tobacco | Lobelia inflata |
| Jack-in-the-pulpit | Arisaema triphyllum |
| Japanese wisteria | Wisteria floribunda |
| Japanese yew | Taxus cuspidata |
| Jerusalem-cherry | Solanum pseudocapsicum |
| jimsonweed | Datura stramonium |
| Johnson grass | Sorghum halepense |
| Kaffir lily | Clivia miniata |
| Kentucky coffeetree | Gymnocladus dioicus |
| kochia | Kochia scoparia |
| lamb's-quarters | Chenopodium album |
| large-leaved lupine | Lupinus polyphyllus |
| leafy spurge | Euphorbia esula |
| leatherwood | Dirca palustris |
| lily-of-the-valley | Convallaria majalis |
| locoweed (Oxytropis sericea) | Oxytropis sericea |
| low larkspur | Delphinium bicolor |
| maidenhair tree | Ginkgo biloba |
| mango | Mangifera indica |
| marijuana | Cannabis sativa |
| marsh arrow-grass | Triglochin palustre |
| marsh horsetail | Equisetum palustre |
| May-apple | Podophyllum peltatum |
| Menzies larkspur | Delphinium menziesii |
| monk's hood | Aconitum napellus |
| moonseed | Menispermum canadense |
| morning glory | Ipomoea tricolor |
| mother-in-law plant | Dieffenbachia seguine |
| motherwort | Leonurus cardiaca |
| naked-flowered sneezeweed | Helenium flexuosum |
| narcissus | Narcissus poeticus |
| northern water-hemlock | Cicuta virosa |
| oats | Avena sativa |
| Ohio buckeye | Aesculus glabra |
| oleander | Nerium oleander |
| onion | Allium cepa |
| opium poppy | Papaver somniferum |
| Oriental poppy | Papaver orientale |
| Osage-orange | Maclura pomifera |
| pawpaw | Asimina triloba |
| penciltree | Euphorbia tirucalli |
| Peruvian lily | Alstroemeria ligtu |
| petty spurge | Euphorbia peplus |
| philodendron | Philodendron cordatum |
| pin cherry | Prunus pensylvanica |
| pink lady's-slipper | Cypripedium acaule |
| poinsettia | Euphorbia pulcherrima |
| poison ivy | Rhus radicans |
| poison suckleya | Suckleya suckleyana |
| poison sumac | Rhus vernix |
| poison-hemlock | Conium maculatum |
| pokeweed | Phytolacca americana |
| ponderosa pine | Pinus ponderosa |
| potato | Solanum tuberosum |
| precatory-pea | Abrus precatorius |
| prickly comfrey | Symphytum asperum |
| prickly lettuce | Lactuca scariola |
| primula | Primula obconica |
| prostrate pigweed | Amaranthus blitoides |
| purple cockle | Agrostemma githago |
| purple locoweed | Oxytropis lambertii |
| radish | Raphanus sativus |
| rapeseed | Brassica napus |
| red chokecherry | Prunus virginiana |
| red clover | Trifolium pratense |
| red maple | Acer rubrum |
| red oak | Quercus rubra |
| redroot pigweed | Amaranthus retroflexus |
| reed canarygrass | Phalaris arundinacea |
| rhubarb | Rheum rhaponticum |
| Russian knapweed | Centaurea repens |
| Saskatoon (a serviceberry) | Amelanchier alnifolia |
| scarlet pimpernel | Anagallis arvensis |
| seaside arrow-grass | Triglochin maritima |
| sensitive fern | Onoclea sensibilis |
| sheep sorrel | Rumex acetosella |
| sheep-laurel | Kalmia angustifolia |
| showy lady's-slipper | Cypripedium reginae |
| showy milkweed | Asclepias speciosa |
| Siberian scilla | Scilla siberica |
| silky lupine | Lupinus sericeus |
| silvery lupine | Lupinus argenteus |
| skunk cabbage | Symplocarpus foetidus |
| small lupine | Lupinus pusillus |
| smooth pigweed | Amaranthus hybridus |
| sneezeweed | Helenium autumnale |
| snowdrop | Galanthus nivalis |
| Sorghum | Sorghum bicolor |
| spatulate-leaved heliotrope | Heliotropium curassavicum |
| spotted dumbcane | Dieffenbachia maculata |
| spotted water-hemlock | Cicuta maculata |
| spreading dogbane | Apocynum androsaemifolium |
| spurge-laurel | Daphne laureola |
| squirrel-corn | Dicentra canadensis |
| St. John's-wort | Hypericum perforatum |
| star-of-Bethlehem | Ornithogalum umbellatum |
| stinging nettle | Urtica dioica |
| stinking rabbitbrush | Chrysothamnus nauseosus |
| stinkweed | Thlaspi arvense |
| Sudan grass | Sorghum sudanense |
| sun spurge | Euphorbia helioscopia |
| sunflower | Helianthus annuus |
| sweet pea | Lathyrus odoratus |
| Swiss-cheese plant | Monstera deliciosa |
| tall larkspur | Delphinium glaucum |
| tall manna grass | Glyceria grandis |
| tansy | Tanacetum vulgare |
| tansy ragwort | Senecio jacobaea |
| Tartarian honeysuckle | Lonicera tatarica |
| thin-leaved snowberry | Symphoricarpos albus |
| timber milk-vetch | Astragalus miser |
| tobacco | Nicotiana tabacum |
| tree-of-heaven | Ailanthus altissima |
| tulip | Tulipa gesneriana |
| two-grooved milk-vetch | Astragalus bisulcatus |
| Rumex venosus | |
| velvety goldenrod | Solidago mollis |
| Virginia creeper | Parthenocissus quinquefolia |
| western bleedingheart | Dicentra formosa |
| western minniebush | Menziesia ferruginea |
| western poison-oak | Rhus diversiloba |
| western water-hemlock | Cicuta douglasii |
| white camas | Zigadenus elegans |
| white clover | Trifolium repens |
| white oak | Quercus alba |
| white rose-bay | Rhododendron albiflorum |
| white snakeroot | Eupatorium rugosum |
| white sweet-clover | Melilotus alba |
| wild cabbage | Brassica oleracea |
| wild calla | Calla palustris |
| wild false indigo | Baptisia leucantha |
| wild ginger | Asarum canadense |
| wild indigo | Baptisia tinctoria |
| Allium canadense | |
| wild parsnip | Pastinaca sativa |
| wild radish | Raphanus raphanistrum |
| wormseed mustard | Erysimum cheiranthoides |
| yellow iris | Iris pseudacorus |
| yellow lady's-slipper | Cypripedium calceolus |
| yellow rocket | Barbarea vulgaris |
| yellow sage | Lantana camara |
| yellow star-thistle | Centaurea solstitialis |
| yellow sweet-clover | Melilotus officinalis |
| yellow toadflax | Linaria vulgaris |
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