twiners or lianas. Leaves orbicular-reniform, peltate or not peltate, margin
hirsute. Male inflorescence axillary peduncled cymes or thyrses, solitary or
fascicled, sometimes short cymes, borne along an axillary shoot bearing reduced
leaves. In male flowers sepals 4, obovate, petals connate, cupuliform, stamens
into a peltate synandrium. In female flowers sepals 1-2, petals 1-2, carpel 1,
stigmas 3-fid. Drupe curved with style-scar, pubescent or hispid, endocarp
dorsally with 2-rows of transverse ridges. Seeds horseshoe-shaped.