Liana; branchlets green, compressed, obscurely puberulent with trichomes 0.3 mm long or less to glabrous, the older branches glabrous. Leaves with petioles 1-7 mm long which are glabrous or obscurely puberulent; blades ovate or lanceo-late to elliptic or oblanceolate, 5-19 cm long, 2.5-9.5 cm broad, apically acuminate, basally rounded or subcordate to acute, chartaceous or subcoriaceous, often drying olive-ocher yellow, glabrous or essentially so at maturity (sometimes sparsely and minutely puberulent along the primary nerves and/or with a few basal-mar-ginal cilia), 3(5)-plinerved, the primary nerves raised below, impressed above, the inner pair of principal nerves typically barbate in the axils with rufescent trichomes to ca 0.8 mm long, the reticulation faint to prominulous on both sur- faces. Inflorescences axillary, condensed-thyrsoid or short-racemose. Flowers with pedicels to ca 2 mm long; calyx-lobes lanceolate or ovate-lanceolate, 1-1.5 mm long, apically acute to acuminate, externally hirsutulous with short rusty tichomes or essentially glabrous, marginally ciliate, the tube lacking to ca 0.5 mm long; corolla minutely papillose externally (not with definite trichomes), the tube pilose within, the lobes internally bearded at the base but otherwise glabrous; anthers subsessile; style glabrous. Fruit glabrous, ca 4 cm in diam, yellow; seeds numerous, irregularly oblong, ca 20 mm long and 15 mm broad, 4 mm thick.
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