calycanthus

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Calycanthaceae A small family of trees and shrubs, most of them aromatic, with simple, opposite, exstipulate leaves, and flowers that have numerous tepals, stamens, and free carpels, the carpels and achenes lying within the hollowed receptacle. There are 3 genera, with 9 species, occurring in eastern Asia (Chimonanthus and Sinocalycanthus) and N. America (Calycanthus).