Lianas to 20 m. Branchlets puberulent or glabrous; axillary spines spirally curved apically. Petiole to 1 cm; leaf blade elliptic, narrowly elliptic, ovate, or suborbicular, 2--10 X 1--5 cm, papery to leathery, abaxially pubescent or glabrous, adaxially glabrous or pubescent only on midvein, base attenuate to subcordate, apex acuminate, basal veins 3--5. Cymes axillary and/or terminal, 2- or 3-branched, 1--5 cm, many-flowered, pubescent or glabrous. Flowers 5-merous. Calyx 1--2 mm, outside pubescent or glabrous, inside glabrous; lobes ovate to suborbicular. Corolla 3--4 mm; tube ± as long as lobes, glabrous or outside puberulent; lobes narrowly ovate, outside glabrous or very rarely puberulent, inside with a row of erect bristlelike hairs at base or to middle of lobes, apically strongly thickened. Stamens inserted at middle of corolla tube, included; filaments very short; anthers ovate, apex apiculate, base bearded to ciliate. Pistil 1.5--2 mm, glabrous. Ovary globose, ca. 1 mm in diam. Berries ovoid to globose, to 2 cm in diam., 1- or 2-seeded. Seeds ellipsoid to rounded, 6--12 mm in diam. Fl. Mar-Aug, fr. Jun-Dec.

Montane forests, forest edges; 500--800 m. S Yunnan [Cambodia, India, Indonesia, Laos, Malaysia, Thailand, Vietnam; Australia].