poison oak

English

poison oak leaves

Its leaves resemble those of the true oaks, and the leaves and twigs contain urushiol, which can cause allergic reactions.

poison oak (usually uncountable, plural poison oaks)

Any of the species of Toxicodendron with compound leaves having three oak-like leaflets, native to North America.

单词	poison oak
释义	poison oak English poison oak leaves Etymology Its leaves resemble those of the true oaks, and the leaves and twigs contain urushiol, which can cause allergic reactions. Noun poison oak (usually uncountable, plural poison oaks) Any of the species of Toxicodendron with compound leaves having three oak-like leaflets, native to North America. Hyponyms Toxicodendron diversilobum, western poison oak Toxicodendron pubescens, Atlantic poison oak Further reading *Toxicodendron* on Wikipedia.Wikipedia *Toxicodendron* on Wikispecies.Wikispecies *Toxicodendron pubescens* on Wikimedia Commons.Wikimedia Commons *Toxicodendron diversilobum* on Wikimedia Commons.Wikimedia Commons poison oak at USDA Plants database (T. pubescens) poison oak at USDA Plants database (T. diversilobum)
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