English > poisonous plant: 1 sense > noun 1, plant| Meaning | A plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism. |
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| Narrower | American holly, Christmas holly | An evergreen tree |
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| aconite | Any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers |
| baneberry, cohosh, herb Christopher | A plant of the genus Actaea having acrid poisonous berries |
| 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 |
| eastern poison oak, Toxicodendron quercifolium, Rhus quercifolia, Rhus toxicodenedron | poisonous shrub of southeastern United States causing a rash on contact |
| fool's parsley, lesser hemlock, Aethusa cynapium | European weed naturalized in America that resembles parsley but causes nausea and poisoning when eaten |
| gloriosa, glory lily, climbing lily, creeping lily, Gloriosa superba | Any plant of the genus Gloriosa of tropical Africa and Asia |
| hellebore | Any plant of the Eurasian genus Helleborus |
| hemlock, poison hemlock, poison parsley, California fern, Nebraska fern, winter fern, Conium maculatum | large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers |
| lantana | A flowering shrub |
| oleander, rose bay, Nerium oleander | An ornamental but poisonous flowering shrub having narrow evergreen leaves and clusters of fragrant white to pink or red flowers |
| poison ash, poison dogwood, poison sumac, Toxicodendron vernix, Rhus vernix | Smooth American swamp shrub with pinnate leaves and greenish flowers followed by greenish white berries |
| poison ivy, markweed, poison mercury, poison oak, Toxicodendron radicans, Rhus radicans | Climbing plant common in eastern and central United States with ternate leaves and greenish flowers followed by white berries |
| snowberry, common snowberry, waxberry, Symphoricarpos alba | deciduous shrub of western North America having spikes of pink flowers followed by round white berries |
| 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 |
| varnish tree, lacquer tree, Chinese lacquer tree, Japanese lacquer tree, Japanese varnish tree, Japanese sumac, Toxicodendron vernicifluum, Rhus verniciflua | small Asiatic tree yielding a toxic exudate from which lacquer is obtained |
| water dropwort, hemlock water dropwort, Oenanthe crocata | European poisonous herb having tuberous roots, yellow juice that stains the skin, yellow flowers and foliage resembling celery |
| water fennel, Oenanthe aquatica | European poisonous herb with fibrous roots |
| water hemlock, Cicuta verosa | tall erect highly poisonous Eurasiatic perennial herb locally abundant in marshy areas |
| western poison oak, Toxicodendron diversilobum, Rhus diversiloba | poisonous shrub of the Pacific coast of North America that causes a rash on contact |
| Broader | plant, flora, plant life | (botany) a living organism lacking the power of locomotion |
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| Spanish | planta venenosa |
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| Catalan | planta verinosa |
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