Small trees and shrubs, sometimes climbing. Leaves alternate, rarely opposite, often coriaceous. A peculiarity of the flowers is that the perigynous stamens are inserted on the disk which fills the bottom of the calyx and sometimes covers the ovary. Fruit a capsule, an indehiscent drupe, or a samara. Seeds furnished with a pulpy, colored, cupular aril.
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.