Rauwolfia
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Related to rauwolfias: Rauwolfia serpentina
Rauwolfia
[rau̇′wu̇l·fē·ə] (botany)
A genus of mostly poisonous, tropical trees and shrubs of the dogbane family (Apocynaceae); certain species yield substances used as emetics and cathartics, while R. serpentina is a source of alkaloids used as tranquilizers.