High-climbing canopy liana. Leaflets (3-)4-5, oblong-elliptic, acuminate, chartaceous, often with a metallic hue above, sessile to 1½ cm stalked by the tapering base; 8-17 by 3-7½ cm; petiole 3-10 cm. Thyrses terminal and in uppermost leaf-axils, 5-20 cm long. Pedicels c. ¼-½ cm. Calyx cupular, 3-5 by 3-5 mm, shallow-lobed, glandless. Mature corolla 2½-3 cm, outside papillose, basal tube about as long as the widened upper tube and as the lobes, brown, with dark streaks inside; lobes long-hairy within, 3-4 mm; tube with a long-hairy zone inside to the insertion of the stamens.
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