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Alfalfa (Medicago sativa L.)
American Coffee Berry Tree see Kentucky Coffee Tree
Bloodroot (Sanguinaria canadensis L.)
Bouncing Bet (Saponaria officinalis L.)
Bull Nettle (Solanum carolinense L.)
Bracken or Brake Fern (Pteridium aquilinum L.)
Burning Bush see Fireweed
Buttercup (Ranunculus spp.)
Carelessweed see Pigweed
Castor Bean (Ricinus communis L.)
Clover, Alsike & Other Clovers (Trifolium hybridum L. & other species)
Cocklebur (Xanthium strumarium L.)
Creeping Charlie see Ground Ivy
Crown of Thorns (Euphorbia milii)
Curly Dock (Rumex crispus L.)
Daffodil (Narcissus spp.)
Delphinium (Delphinium spp.)
Devil's Trumpet see Jimson Weed
Dogbane (Apocynum spp.)
Dutchman's Breeches (Dicentra cucullaria (L.) Bernh.)
Elderberry (Sambucus canadensis L.)
English Ivy (Hedera helix L.)
Ergot (Claviceps purpurea (Fr.) Tul.)
Fern, Bracken (Pteridium aquilinum L.)
Fireweed (Kochia scoparia L.)
Foxglove (Digitalis purpurea L.)
Ground Ivy (Glecoma hederacea L.)
Hemlock
        Poison (Conium maculatum L.)
        Water (Cicuta maculata L.)
Horse Chestnut, Buckeyes (Aesculus hippocastanum L.)
Horse Nettle (Solanum carolinense L.)
Horsetails (Equisetum arvense L. & other species)
Hyacinth (Hyacinth orientalis)
Hydrangea (Hydrangea spp.)
Ivy
        English (Hedera helix L.)
        Ground (Glecoma hederacea L.)
        Poison (Toxicodendron radicans (L.) Kuntze)
Jack-in-the-Pulpit (Arisaema spp.)
Jamestown Weed see Jimson Weed
Japanese Yew (Taxus cuspidata Sieb. & Zucc.)
Jerusalem Cherry (Solanum pseudocapsicum L.)
Jimson Weed (Datura stramonium L.)
Kentucky Coffee Tree (Gymnocladus dioica (L.) K. Koch)
Kentucky Mahagony Tree see Kentucky Coffee Tree
Klamath Weed see St. Johnswort
Lamb's Quarters (Chenopodium album L.)
Lantana (Lantana camara L.)
Larkspur (Delphinium spp.)
Lily-of-the-Valley (Convallaria majalis)
Lupine (Lupinus spp.)
Mad Apple see Jimson Weed
Maple, Red (Acer rubrum)
Mayapple (Podophyllum peltatum L.)
Milkweed, Common (Asclepias syriaca L.)
Mint, Purple (Perilla frutescens)
Nicker Tree see Kentucky Coffee Tree
Nightshade (Solanum spp.)
Oleander (Nerium oleander L.)
Ohio Buckeye (Aesculus glabra Willd.)
Philodendron (Philodendron spp.)
Pigweed (Amaranthus spp.)
Poison Hemlock (Conium maculatum L.)
Poison Ivy (Toxicodendron radicans (L.) Kuntze)
Poke (Phytolacca americana L.)
Purple Mint (Perilla frutescens)
Redroot see Pigweed
Rhododendron (Rhododendron spp.)
Rhubarb (Rheum rhaponticum L.)
Squirrelcorn (Dicentra canadensis (Goldie) Walp.) see Dutchman's Breeches
Staggerweed (Dicentra spp.) see Dutchman's Breeches
St. Johnswort (Hypericum perforatum L.)
Stink Weed see Jimson Weed
Stump Tree see Kentucky Coffee Tree
Sudan Grass (Sorghum vulgare var. sudanense Hitchc.)
Summer Cypress see Fireweed
Thorn Apple see Jimson Weed
Tulip (Tulipa spp.)
Water Hemlock (Cicuta maculata L.)
White Snakeroot (Eupatorium rugosum Hout.)
Wild Onion (Allium spp.)
Yellow Sage see Lantana

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Scientific Names
 
Acer rubrum -- (Maple, Red)
Aesculus glabra Willd. -- (Ohio Buckeye)
Aesculus hippocastanum L. -- (Horse Chestnut, Buckeye)
Allium spp. -- (Wild Onion)
Amaranthus retroflexus. -- (Pigweed)
Apocynum spp. -- (Dogbane)
Arisaema spp. -- (Jack-in-the-Pulpit)
Asclepias syriaca L. -- (Common Milkweed)
Chenopodium album L. -- (Lamb's Quarters)
Cicuta maculata L. -- (Water Hemlock)
Claviceps purpurea (Fr.) Tul. -- (Ergot)
Conium maculatum L. -- (Poison Hemlock)
Convallaria majalis -- (Lily-of-the-Valley)
Datura stramonium L. -- (Jimson Weed)
Delphinium spp. -- (Delphinium)
Dicentra spp. (Dutchman's Breeches & Squirrelcorn)
Digitalis purpurea L. -- (Foxglove)
Equisetum arvense L. & other species -- (Horsetails)
Eupatorium rugosum Hout. -- (White Snakeroot)
Euphorbia milii -- (Crown of Thorns)
Glecoma hederacea L. -- (Ground Ivy)
Gymnocladus dioica (L.) K. Koch -- (Kentucky Coffee Tree)
Hedera helix L. -- (English Ivy)
Hyacinth orientalis -- (Hyacinth)
Hydrangea spp. -- (Hydrangea)
Hypericum perforatum L. -- (St. Johnswort)
Kochia scoparia L. -- (Fireweed)
Lantana camara L. -- (Lantana)
Lupinus spp. -- (Lupine)
Medicago sativa L. -- (Alfalfa)
Narcissus spp. -- (Daffodil)
Nerium oleander L. -- (Oleander)
Perilla frutescens -- (Purple Mint)
Philodendron spp. -- (Philodendron)
Phytolacca americana L. -- (Poke)
Podophyllum peltatum L. -- (Mayapple)
Pteridium aquilinum (Desv.) Hier. -- (Bracken or Brake Fern)
Ranunculus spp. -- (Buttercup)
Rhododendron spp. -- (Rhododendron)
Rheum rhaponticum L. -- (Rhubarb)
Ricinus communis L. -- (Castor Bean)
Rumex crispus L. -- (Curly Dock)
Sambucus canadensis L. -- (Elderberry)
Sanguinaria canadensis L. -- (Bloodroot)
Saponaria officinalis L. -- (Bouncing Bet)
Solanum spp. -- (Nightshades)
Solanum carolinense L. -- (Horse or Bull Nettle)
Solanum pseudocapsicum L. -- (Jerusalem Cherry)
Sorghum vulgare var. sudanense Hitchc. -- (Sudan Grass)
Taxus cuspidata Sieb. & Zucc. -- (Japanese Yew)
Toxicodendron radicans (L.) Kuntze -- (Poison Ivy)
Trifolium hybridum L. & other species -- (Alsike & Other Clovers)
Tulipa spp. -- (Tulip)
Xanthium strumarium L. -- (Cocklebur)

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Other Poisonous Plants Databases

Bibliography: Toxic Plants (Jean Bruneton, Universite d'Angers)

Canadian Poisonous Plants Information System (Derek B. Munro, Biological Resources Program,
Eastern Cereal and Oilseed Research Centre)

Cornell University Poisonous Plants Page (Dan Brown and Tatiana Stanton, Animal Science Dept., Cornell)

FDA/CFSAN Poisonous Plants Database (compiled by D. Jesse Wagstaff)

Guide to Poisonous Plants (Dr. A.P. Knight, College of Veterinary Medicine, Colorado State University. Sign up at IVIS home page required)

Indiana Toxic Plants (Rebecca J. Goetz, Cooperative Extension Service, Purdue University)

Other Related Links

American Association of Poison Control Centers

Certified Poison Centers and Toxic Exposure Surveillance System (TESS) ~ American Association of Poison Control Centers

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