Stapf, Hook. 1c. (1901) t. 2711; Merr., En. Born. (1921) 497; Pichon, Mém. Mus. Hist. Nat. Paris II, 24 (1948) 154; Bakh. f., Blumea 6 (1950) 385; Back. & Bakh. f., Fl. Java 2 (1965) 224. Glabrous lianas with branched axillary tendrils. Leaves decussate, coriaceous or subcoriaceous, ovate, elliptic, or lanceolate. Inflorescences axillary, thyrsoid, slightly longer than the petioles of the subtending leaves, loose, with rather long slender branches. Flowers small, pentamerous. Pedicels with 1 or 2 bracteoles. Calyx lobes orbicular to ovate, ciliate, without glands inside. Corolla urceolate, yellowish, tube inflated, globular, constricted at the mouth but without mouth scales; lobes ovate or ovate-oblong, obtuse, auriculate, as long as the tube, overlapping to the left, forming a cylindric bud much narrower than the tube. Stamens inserted in the middle of the tube, anthers short-ovate. Ovary superior, glabrous, conical, syncarpous, bicarpellate, unilocular, multiovulate. Style short. Stigma head widened from the style into a narrow dish and crowned by two short tips reaching up to the anthers. Fruit a globose yellow berry. Seeds ellipsoidal, exalbuminous; embryo with large and thick cotyledons and a short radicle.