Climbing shrub or liana 3–25 m high; trunk 1–6 cm in diameter; bark greyish brown, ± rough; branches greyish brown, with many large pale brown lenticels; branchlets densely reddish brown-pubescent.. Leaves petiolate; blade elliptic-oblong to obovate, 4–13.5 cm long, 2–6.8 cm wide, acuminate, exceptionally emarginate at the apex, rounded or cuneate at the base, with varioulsy branched hairs; domatia absent or very inconspicuous; petiole 4–12(–22) mm long, densely covered with variously branched hairs, with 1–15 glands on the adaxial side and 2(–8) glands at the base of the blade.. Inflorescence 3–11 cm long, with very dense rusty brown tomentum in all parts; bracts up to 1.4 mm long; pedicels 1–2.5 mm long.. Flowers with sepals ovate, 1.2–2.6 mm long, with dense rusty brown tomentum; corolla tube yellow to greenish yellow, urceolate, 2.7–3 mm long; lobes yellow to greenish yellow, ovate to triangular, 2.3–2.8 mm long, 0.8–1.2 mm wide, densely pubescent outside; corona yellowish later turning white, 0.2–0.5 mm long, glabrous, puberulous at the base; stamens inserted 0.6–0.8 mm from the base of the tube; pistil 1.9–2.5 mm long; style 0.1–0.2 mm long; ovules 15–30 in each carpel.. Fruits narrowly cylindrical, 6.3–24 cm long, 0.4–1 cm in diameter, covered with dense, up to 2.5 mm long deciduous rusty brown or grey tomentum; seeds up to 25 in each follicle; seed 9.5–19 mm long; coma 21–45 mm long.
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