Concept cluster: Plants > Poisonous or medicinal plants
n
Verbascum thapsus, the great mullein, common mullein, or hag-taper.
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The plant Koeberlinia spinosa.
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A sweet-scented herb; ambrosia (Dysphania botrys).
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A flowering plant native to North America, Petasites frigidus; sweet coltsfoot.
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A perennial herb, Cerastium arcticum, growing in parts of the Arctic.
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especially, Colchicum autumnale.
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The plant Symphoricarpos occidentalis.
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Monardella lanceolata, native to California and Baja California.
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(UK, Ireland) Any plant in the genus Thesium
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A tropical flowering plant, Scaevola plumieri.
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Alternative spelling of black bryony. [The plant Tamus communis.]
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Solanum ptychanthum (eastern black nightshade) of the Caribbean region.
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Sanicula spp.
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A plant of the species Vincetoxicum nigrum, native to southern Europe, considered invasive in the United States.
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Culver's root, Veronicastrum virginicum
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A perennial American herb (Caulophyllum thalictroides), the root of which is used in medicine.
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American brooklime (Veronica americana)
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Ceanothus spp.
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Trautvetteria carolinensis
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Phyla canescens, of South America.
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The catawba rhododendron (Rhododendron catawbiense).
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Japanese indigo (Persicaria tinctoria), a flowering plant in the buckwheat family.
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A rare species of ragwort, Sinacalia tangutica, endemic to China
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Leafy green plants of genus Basella.
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Liatris squarrosa (scaly blazingstar)
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Cornus sanguinea, native to most of Europe
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A perennial herb, Thelesperma megapotamicum (synonym Thelesperma gracile), native to the southwest and western plains of North America and used by the Hopi, Navajo and other American Indians for tea, as a dye, and for other herbal purposes.
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A plant, savin (Juniperus sabina), which was historically used as both a contraceptive and to induce abortions.
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other South American plants with similar toxins that were also used in arrow poisons, mostly in the family Menispermaceae
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The plant Dalibarda repens.
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Actaea pachypoda, the white baneberry, a flowering plant native to eastern North America.
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Japanese knotweed
n
Eutrochium dubium, native to the eastern coastal plain of the United States.
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Maianthemum racemosum
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Verbesina virginica (white crownbeard)
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A Mediterranean herb, Teucrium chamaedrys, historically grown for medicinal use but now mostly as an ornamental miniature hedge in herb gardens.
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Eriogonum salicornioides (glasswort buckwheat)
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The plant Gratiola aurea, the golden hedgehyssop.
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The flowering plant Sphenoclea zeylanica.
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Solanum sarrachoides
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Solanum physalifolium
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Viola hastata, principally of the woodlands of the Appalachians and nearby areas.
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Wild ginger, Asarum caudatum
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A toxic extract of certain false hellebores (Veratrum album or Veratrum viride), formerly used as a pesticide.
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Common rue (Ruta graveolens).
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Solanum sarrachoides
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The plant Corydalis cava.
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The plant Nyctanthes arbor-tristis.
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A plant in the northeastern North America, Arisaema triphyllum.
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Rhodotypos scandens, a deciduous shrub in the family Rosaceae, with shiny black drupes.
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The silverbush, Anthyllis barba-jovis, a European shrub with silvery leaves.
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The plant comfrey.
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Amorpha canescens, a tall deciduous shrub in the pea family, native to North America. It has very small purple flowers grouped in racemes.
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A low-growing plant native to the eastern US with inconspicuous green or brown flowers shaped like tiny jugs, Hexastylis arifolia
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A common flowering perennial herb of northern woodlands, Hepatica nobilis (syn. Anemone hepatica), used in traditional European herbal medicine.
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bog-myrtle
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A type of passionflower, purple in color (Passiflora incarnata).
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A similar edible plant (Blitum bonus-henricus), otherwise known as English mercury or allgood.
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(botany) Any of the genus Monarda of flowering plants, the bergamots or bee balms.
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Alternative form of monkshood [(countable) Any of various poisonous plants, of the genus Aconitum, with blue or white flowers in the shape of a hood.]
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Ferula moschata (syn. Ferula sumbul), a the tall umbelliferous plant
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Cyrilla spp.
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The plant Crepis pleurocarpa.
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oleander (Nerium oleander)
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(colloquial) Any plant of the wider Solanaceae family, including the nightshades as well as tomato, potato, eggplant, and deadly nightshade.
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Silene chalcedonica (syn. Lychnis chalcedonica)
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Similar plants of genus Catharanthus.
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Melia azedarach, a tree in the mahogany family (Meliaceae)
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The burnet saxifrage.
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The plant Inula conyzae, (now Pentanema conyzae).
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Spear thistle.
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A plant, Euphorbia pulcherrima, with rather small and insignificant flowers surrounded by large bright red leaves; native to Mexico and Central America and widely cultivated as a garden plant.
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(uncountable) A lethally poisonous drink made from the plant.
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A woody shrub or small tree, all parts of which cause irritation to humans; Toxicodendron vernix, formerly Rhus vernix.
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A tritoma; a red-hot poker plant.
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A poisonous North American plant, Phytolacca americana, with reddish stems, broad leaves, clusters of white flowers, and dark purple berries.
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The seeds of nux vomica.
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Daucus pusillus.
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The plant Anagallis arvensis.
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Solanum villosum
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A flowering plant in the geranium family, Erodium cicutarium, native to the Mediterranean basin.
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Zostera capricorni
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Any of various flowering plants in the genus Hibiscus.
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The roseroot, Rhodiola rosea.
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A plant of the variety Hepatica nobilis var. obtusa
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Ericameria obovata, a species of flowering shrub found in North America.
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A plant, the sea buckthorn.
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Any of the genus Atriplex of plants, especially Atriplex hortensis or Atriplex patula, found in dry habitats, that have edible leaves resembling spinach, including many desert and seashore plants and halophytes.
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The perennial plant Streptopus lanceolatus.
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A flowering plant, Silene maritima.
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Ageratina havanensis
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Picnomon acarna, a Eurasian thistle.
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Luzula spicata, a flowering plant in the family Juncaceae.
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Any euphorbiaceous plant.
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Dicentra canadensis, a herbaceous plant in the fumitory family with small yellow clustered bulblets, finely dissected leaves, and white heart-shaped flowers, native to deciduous woodland in eastern North America.
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Spiraea tomentosa, of eastern North American
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Any other noxious plant.
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A plant species of the genus Rubus, Rubus saxatilis.
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mannagrass, in genus Glyceria
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liquorice
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Solanum giganteum
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The plant Gastrolobium crassifolium.
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Calicotome spinosa, a spiny, densely branched shrub of the legume family.
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(obsolete) A species of flowering marsh plant, Damasonium alisma.
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A large flowering vine, the trumpet vine, Campsis radicans
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A North American vine grown for its abundant trumpet-shaped flowers, Campsis radicans
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The sclerotium of the wood-decay fungus Wolfiporia extensa, used by Native Americans and the Chinese as food and as a herbal medicine.
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A South African plant of the genus Veltheimia
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A climbing plant (Parthenocissus quinquefolia).
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The greenbrier (Smilax spp., esp. Smilax rotundifolia)
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Any of several perennial flowering plants, of the genus Trillium, having flowers with three petals.
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Geranium maculatum
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Halesia carolina (family Styracaceae; Carolina silverbell, little silverbell)
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Lepechinia calycina, an herb native to California.
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A shrubby plant, Solanum dulcamara.
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The plant Gastrolobium tomentosum.
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Solanum villosum

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