in botany, a genus of the icosandra monogynia clasps. The calyx consists of five segments, and the corolla of five petals; and the shell of the drupe is full of prominent sutures. There are 13 species, five of them natives of Britain, viz. the insititia, or black bullace-tree; the spinosa, or sloe-tree; the padus, or birds cherry; the avium, or common wild cherry; and the cerasus, or black cherry.