hemp, in botany, a genus of the dioecia pentandra clas. The calix of the male is divided into five segments, and it has no corolla. The calix of the female consists of one leaf, open at the side; it has two styli; and the nut or capsule consists of two valves. There is but one species, viz. the sativa, or common hemp, a native of India. For the method of cultivating and preparing hemp, see Flax, and Hemp.

Cannacorus, in botany. See Canna.