poisonous plant

Thesaurus

Noun

1.

poisonous plant - a plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism plant life, flora, plant - (botany) a living organism lacking the power of locomotion aconite - any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers cohosh, herb Christopher, baneberry - a plant of the genus Actaea having acrid poisonous berries hellebore - any plant of the Eurasian genus Helleborus dogbane - any of several poisonous perennial plants of the genus Apocynum having acrid milky juice and bell-shaped white or pink flowers and a very bitter root Nerium oleander, oleander, rose bay - an ornamental but poisonous flowering shrub having narrow evergreen leaves and clusters of fragrant white to pink or red flowers: native to East Indies but widely cultivated in warm regions climbing lily, creeping lily, gloriosa, Gloriosa superba, glory lily - any plant of the genus Gloriosa of tropical Africa and Asia; a perennial herb climbing by means of tendrils at leaf tips having showy yellow to red or purple flowers; all parts are poisonous common snowberry, snowberry, Symphoricarpos alba, waxberry - deciduous shrub of western North America having spikes of pink flowers followed by round white berries American holly, Christmas holly - an evergreen tree poison ash, poison dogwood, Rhus vernix, Toxicodendron vernix, poison sumac - smooth American swamp shrub with pinnate leaves and greenish flowers followed by greenish white berries; yields an irritating oil markweed, poison mercury, Rhus radicans, Toxicodendron radicans, poison oak, poison ivy - climbing plant common in eastern and central United States with ternate leaves and greenish flowers followed by white berries; yields an irritating oil that causes a rash on contact Rhus diversiloba, Toxicodendron diversilobum, western poison oak - poisonous shrub of the Pacific coast of North America that causes a rash on contact eastern poison oak, Rhus quercifolia, Rhus toxicodenedron, Toxicodendron quercifolium - poisonous shrub of southeastern United States causing a rash on contact Chinese lacquer tree, Japanese lacquer tree, Japanese sumac, Japanese varnish tree, lacquer tree, Rhus verniciflua, Toxicodendron vernicifluum, varnish tree - small Asiatic tree yielding a toxic exudate from which lacquer is obtained lantana - a flowering shrub Aethusa cynapium, fool's parsley, lesser hemlock - European weed naturalized in America that resembles parsley but causes nausea and poisoning when eaten Cicuta verosa, water hemlock - tall erect highly poisonous Eurasiatic perennial herb locally abundant in marshy areas spotted cowbane, spotted hemlock, spotted water hemlock - tall biennial water hemlock of northeastern North America having purple-spotted stems and clusters of extremely poisonous tuberous roots resembling small sweet potatoes Nebraska fern, poison hemlock, poison parsley, winter fern, California fern, Conium maculatum, hemlock - large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous hemlock water dropwort, Oenanthe crocata, water dropwort - European poisonous herb having tuberous roots, yellow juice that stains the skin, yellow flowers and foliage resembling celery; all parts extremely poisonous Oenanthe aquatica, water fennel - European poisonous herb with fibrous roots