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Rhus

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.15 sec.
Rhus (rus) a genus of trees and shrubs; contact with certain species produces a severe dermatitis in sensitive persons. The most important toxic species are: R. diversilo´ba and R. toxicoden´dron, or poison oak; R. ra´dicans, or poison ivy; and R. ver´nix, or poison sumac.
Rhus (rs, rs)
n.
A genus of vines and shrubs including several species, especially poison ivy, poison oak, and poison sumac, producing oils that can cause dermatitis.

Rhus
plant genus in family Anacardiaceae. Includes Toxicodendron spp.

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