Calyx-tube ovoid or campanulate; limb 5–4-, rarely 6-lobed, deciduous; lobes ovate subulate or filiform. Corolla salver-shaped sometimes shortly so; tube cylindrical; throat glabrous; limb spreading or reflexed, deeply lobed, lobes 5–4 or rarely 6, oval, contorted dextrorsely (as seen from inside) in the bud. Stamens 5–4, rarely 6, inserted at the mouth of the corolla, exserted; filaments short; anthers oblong, apiculate, spreading, fixed at the back rather above the base. Disk fleshy, glabrous. Ovary 2- rarely 3-celled or incompletely so; style filiform, exserted, glabrous or nearly so; stigma fusiform clavate or globose, entire or rarely 2–3-lobed; ovules solitary, inserted on small fleshy placentas ascending from the base of the ovary, amphitropous, subreniform. Fruit somewhat fleshy, pea-shaped, 1-celled, 1-seeded; endocarp chartaceous. Seed globose, filling the cell; hilum basal; testa thin; albumen horny deeply ruminated; embryo terete, elongated, curved, cotyledons linear, radicle inferior. —Scandent shrubs with opposite patent branches, opposite leaves, apiculate entire or cleft stipules from a broad base, and rather small white bracteolate hermaphrodite flowers, capitate, arranged in brachiate terminal panicles or corymbose.