in botany: A genus of the polyandra order belonging to the polygamia class of plants. The calyx has four leaves; the petals are 12; and the seeds are candated. There are three species, all natives of the east.

ATRAPHAXIS: A genus of the digynia order, belonging to the hexandria class of plants; and in the natural method ranking under the 12th order, Holoraceæ. The calyx has two leaves; the petals are two, and sinuated; and there is but one seed. There are two species, both natives of warm countries, but meriting no particular description.