hemp family - 2 genera of erect or twining wind-pollinated herbs: genera Cannabis and Humulus; term not used in all classifications; in some the genus Cannabis is placed in the family Moraceae and the genus Humulus in the family Urticaceaegenus Cannabis - hemp: genus of coarse annuals native to central Asia and widely naturalized in north temperate regions; in some classifications included in the family Moraceae genus Humulus, Humulus - hops: hardy perennial vines of Europe, North America and central and eastern Asia producing a latex sap; in some classifications included in the family Urticaceae |