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(family Anacardiaceae)

A genus of shrubs, small trees, or climbers, which produce a resinous, highly irritant exudate. Several species (e.g. sumac) are ornamentals. R. toxicodendron is poison ivy of N. America. R. verniciflua of China yields lacquer from the trunk and its powdered leaves yield tannin. There are about 200 species, occurring in tropical and warm temperate regions.

Subjects: Plant Sciences and Forestry.

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