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Flowers perfect, with articulated pedicels, in ochreolate fascicles of 1-many. Perianth of 5 discrete unequal tepals, the outer 3 broader than the inner 2; tepals red or greenish white, slightly accrescent in fruit. Stamens 8, 2-3 mm. long, at first exceeding the stigmata; filaments united below into an occasionally appen-diculate tube essentially free from the tepals; anthers 4-locular, introrse, versatile, about 0.5 mm. long. Ovary trigonous; styles 3, arcuate, terminated by peltate stigmata. Achenes mostly concealed by the tepals, bluntly 3-angled, usually brown and slightly lustrous. Capreolate vines scandent by tendrils terminating the inflores-cences, the stems sulcate, herbaceous or suffrutescent, pubescent or glabrate. Leaves alternate, cordate to deltoid, acute to acuminate apically, the blades exceeding the alate or terete petioles; ochreae obsolete. Inflorescences of axillary and terminal racemes or panicles, the rhachises usually pubescent and terminated by tendrils.
Flowers hermaphrodite, pedicellate, borne in clusters in the axils of bracts and arranged in axillary and terminal racemes, the uppermost becoming paniculate; racemes ending in branched tendrils.
Perianth 5(6)-merous, the segments unequal, largest outside, enlarging about the fruit.
Fruit an ovoid-trigonous nut, included within the accrescent perianth.
Perennial tendrilled climbers; stems glabrous or hairy, furrowed.
Leaves alternate, petiolate, cordate or truncate at the base.
Stamens 7–9; filaments united at the base into a short tube.
Ovary somewhat trigonous; styles 3; stigmas 3, capitate.
Ocrea reduced to an annular crest.
