Scotanthus Naudin; Tripodanthera M. Roemer.

Herbs, climbing, slender. Tendrils simple or 2-fid. Leaf blade ovate-cordate, angularly 3-5-lobed. Plants monoecious or dioecious. Male flowers solitary or in a raceme, ebracteate or bracteate; calyx tube elongate, tubular; segments 5, subulate; corolla white or yellow, rotate, 5-partite; segments oblong or obovate; stamens 3, inserted on middle of calyx tube; filaments short, free; anthers connate, one 1-celled, others 2-celled; anther cells conduplicate; rudimentary ovary erect. Female flowers solitary; calyx and corolla as in male flowers; staminodes 3, linear; ovary ovoid or oblong; ovules numerous, horizontal; placentae 3; style filiform. Fruit oblong or subglobose, acute or obtuse at both ends, indehiscent. Seeds obovate or oblong, compressed, marginate.

Four species: S Asia; two species in China.

(Authors: Lu Anmin (路安民 Lu An-ming); Charles Jeffrey)