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Herbaceous perennial climber reaching to 20 m., with pendulous flowers. Stems terete, densely and softly yellow-tomentose; internodes 4–5 cm. or more long. Leaf-lamina 5–10 × 6–12 cm., 3(5)-lobed to c. 2/3 of its length, the lobes 3–4 cm. broad, ovate or ovate-oblong, acute, the sinuses also acute, sharply serrate-dentate and glandular at margin, subcordate at the base, membranous, softly pubescent above, greyish- or yellowish-tomentose beneath; petiole up to 3 cm. long, canaliculate, with 8–12 small sessile glands near the margin; stipules 7–9 × 3–4 mm., subreniform, aristate, denticulate or subentire. Peduncle 2–6 cm. long. Bracts 2·5–3 cm. long, united for 1/2 to 3/4 their length, acute at apex, entire-margined, softly tomentose. Calyx-tube 6·5–8 cm. long, c. 1 cm. in diameter, glabrous, rarely pubescent, olive-green, often red outside, white inside. Sepals 2·5–5·5 × 1–1·5 cm., oblong, obtuse, shortly horned below the apex. Petals almost as long as the sepals, obtuse, pink. Corona consisting of a purple band with a few pinkish tubercles or crenulations. Operculum white, recurved at the margin, subentire. Ovary 9 × 3 mm., oblong, sericeous-tomentose. Fruit 6–7 × 3–3·5 cm., oblong-ovoid, green when unripe, orange-yellow when ripe, softly pubescent. Seeds up to 6 × 5 mm., broadly obovate, asymmetrical, reticulate.