HEDYCARYA, in botany: A genus of the polyanthria order, belonging to the diccia class of plants. The calyx of the male is cleft in eight or ten parts; there is no corolla, nor are there any filaments; the anthers are in the bottom of the calyx, four furrowed, and bearded at top. The calyx and corolla of the female are as in the male; the germs pedicellated; the nuts pedicellated and monospermous.