Stems twining, internodes puberulent along 1 side. Petiole ca. 2.5 cm, slender; leaf blade lanceolate, ca. 5.6 × 2.3 cm, adaxially puberulent, abaxially hairy along veins, base deeply cordate, lobes often overlapping, apex long acuminate; basal veins usually 7, lateral veins 3 or 4 pairs. Inflorescences umbel-like, dense, to 2 cm wide; peduncle 6-9 cm, densely hairy on 1 side, sometimes an isolated flower below main inflorescence. Pedicel 3.5-6 mm, puberulent on 1 side. Sepals oblong lanceolate, ca. 2 × 0.9 mm, puberulent. Corolla white, glabrous outside, densely pilose inside, tube ca. 0.5 mm; lobes ca. 5.5 × 1.7 mm, ± erect. Corona cupular, longer than stigma head, slightly fleshy, tube longer than triangular marginal lobes, interior with 5 internal appendages nearly as long as marginal lobes. Anther appendages ovate. Stigma head rounded.
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