Climbing shrubs, often 5-10 m tall. Branchlets, petioles, and inflorescences dull yellowish-brownish stellate-tomentulose. Stipules triangular, ca. 1 mm; petiole 1.5-6 cm; leaf blade triangular-ovate, oblong-ovate, or ovate, 3.5-10 × 2.5-7 cm, papery, adaxially glabrous, abaxially stellate-pubescent, scatteredly yellowish granular-glandular, base broadly cuneate, sometimes slightly peltate, with 4 basal glands, margin entire or repand, apex acute or acuminate; basal veins 3. Male inflorescences terminal, rarely axillary, branches few or absent, 5-15 cm; bracts subulate, ca. 1.5 mm. Male flowers 2-5-fascicled; pedicel 2-4 mm; calyx lobes 3 or 4, oblong, ca. 3 mm, tomentulose; stamens 40-75. Female inflorescences 5-8 cm; bracts lanceolate, ca. 2 mm. Female flowers: pedicel 2-3 mm; sepals 4 or 5, lanceolate, 2-3 mm, tomentulose; ovary 2-or 3-locular, dull yellow tomentulose; style 3-5 mm, almost free, plumose. Fruiting pedicel 8-12 mm; capsule 2-locular, ca. 10 mm in diam., yellowish-brownish tomentulose, scattered glandular-scaly. Seeds subglobose, ca. 5 mm in diam., black. Fl. Mar-May, fr. Jun-Sep.
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Scandent woody liane up to 20 m long; evergreen. Stems ± rounded towards apices, with dense, clear stellate hairs and scattered yellow sessile glands when young, glabrescent. Leaves alternate, not peltate; lamina elliptic, broadly-ovate or ovate, 22–120 mm long, 15–90 mm wide; base attenuate, weakly cordate, cuneate, rounded or truncate; margins sinuate to weakly dentate with up to 8 poorly developed teeth to 2 mm long; tip acute, short to long acuminate; venation palmiveined, comprising 2–4 lateral veins from base, 3–5 lateral veins further up midrib and reticulate interlateral veins; upper surface without granular inclusions; lower surface pale green to green-yellow, interlateral venation well developed, with dense, clear stellate hairs and scattered to sparse yellow sessile glands when young, becoming scattered with age. Stamens 74–88. Fruit subglobose, 8–9 mm long, 11–15 mm diam., with dense, yellow stellate hairs, sessile glands and echinate processes absent.
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