Poisonous & Toxic Species
Never touch, taste, or consume any species you cannot positively identify. This guide is for educational purposes only. When in doubt, consult a local expert. Use the iNature app for quick AI-powered identification in the field.
Mezereon
Daphne mezereum L.
Daphne mezereum L. is a toxic deciduous ornamental shrub grown for its early spring scented flowers.
durango root
Datisca glomerata (C.Presl) Baill.
Datisca glomerata, or Durango root, is a toxic androdioecious perennial herb native to western North America.
American wild carrot
Daucus pusillus Michx.
Daucus pusillus is an edible small wild carrot species with an amphitropical distribution across the Americas.
Low Larkspur
Delphinium bicolor Nutt.
Delphinium bicolor is a toxic perennial larkspur native to northwestern North America, common names little and low larkspur.
Delphinium consolida L.
Delphinium consolida L.
Delphinium consolida (Consolida regalis) is a poisonous, drought-tolerant herb grown as an ornamental, native across Europe and Western Asia.
Sierra larkspur
Delphinium glaucum S.Watson
Delphinium glaucum is a tall North American larkspur known to cause livestock poisoning on Canadian rangelands.
Siberian larkspur
Delphinium grandiflorum L.
Delphinium grandiflorum, or Siberian larkspur, is a short, poisonous, blue-flowered perennial grown as an ornamental garden plant.
upland larkspur
Delphinium nuttallianum Pritz. ex Walp.
Delphinium nuttallianum is a western North American larkspur that is very poisonous to livestock, especially cattle.
dwarf larkspur
Delphinium tricorne Michx.
Delphinium tricorne is a poisonous perennial larkspur native to central and eastern US, pollinated by bumblebees and hummingbirds.
Columbian Larkspur
Delphinium trolliifolium A.Gray
Delphinium trolliifolium, also called poison delphinium, is a toxic blue-flowered larkspur native to the US Pacific Northwest and northern California.
Dendrocnide meyeniana (Walp.) Chew
Dendrocnide meyeniana (Walp.) Chew
Dendrocnide meyeniana, the poisonous wood nettle, is a stinging urticaceous tree native to Taiwan and the Philippines with cultural and medicinal uses.
Western Tansymustard
Descurainia pinnata (Walter) Britton
Descurainia pinnata, common tansymustard, is a variable weedy annual mustard native to North America with known human and ecological uses.
Illinois bundleflower
Desmanthus illinoensis (Michx.) MacMill. ex B.L.Rob. & Fernald
Desmanthus illinoensis, the Illinois bundleflower, is a common US prairie plant whose root bark contains a toxin toxic to some animals.
Ink Berry
Dianella nigra Colenso
Dianella nigra is a perennial evergreen herb endemic to New Zealand with a Not Threatened 2023 conservation status.
Tasmanian flax-lily
Dianella tasmanica Hook.f.
Dianella tasmanica is a strappy Australian herb with toxic edible-tasting fruits grown in cultivation.
Long-calyx pink
Dianthus superbus L.
Dianthus superbus, fringed pink, is an herbaceous perennial native to Eurasia, used in gardens and traditional medicine.
Dutchman's breeches
Dicentra cucullaria (L.) Bernh.
Dicentra cucullaria, or Dutchman's breeches, is a spring-growing early flowering perennial with ant-dispersed seeds, adapted to bumblebee pollination.
aroma
Dichrostachys cinerea (L.) Wight & Arn.
Dichrostachys cinerea is a thorny woody legume that is invasive in some regions and has multiple traditional and practical uses.
white dittany
Dictamnus albus L.
Dictamnus albus L. is a herbaceous flowering plant that is toxic and rarely grown in American gardens.
tuftroot
Dieffenbachia seguine (Jacq.) Schott
Dieffenbachia seguine, commonly called dumbcane, is a toxic aroid widely cultivated as an ornamental garden and house plant.
Woolly Foxglove
Digitalis lanata Ehrh.
Digitalis lanata Ehrh. is a toxic cardenolide-producing plant that is the source of the heart medication digoxin.
Straw Foxglove
Digitalis lutea L.
Digitalis lutea L. is a short-lived toxic foxgrown commonly grown in gardens, bearing pale yellow spring to summer flowers.
Purple yam
Dioscorea alata L.
Dioscorea alata L., commonly called purple yam or ube, is a widely cultivated staple yam originating from Asian and Oceanian tropics.
air potato
Dioscorea bulbifera L.
Dioscorea bulbifera (air potato) is a fast-growing invasive perennial vine with edible and toxic cultivated and wild varieties.
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