Lianas to 4 m. Stems, leaves, and peduncles densely yellow villous. Petiole 2.5-3.5 cm, apex with 10 minute adaxial glands; leaf blade ovate-cordate, 8-12 × 4-7 cm, papery, base cordate, apex acuminate; basal veins 5. Inflorescences to 9 cm; peduncle ca. 4 cm; rachis sparsely hairy, slightly thickened; bracteoles ovate, ca. 4 × 1 mm. Sepals lanceolate, ca. 3 × 0.7 mm, villous, basal glands 25. Corolla purple, villous outside, glabrous inside; tube ca. 2 mm; lobes ca. 1.2 cm, ciliate. Corona lobes ca. 0.5 × 0.3 mm. Anthers ca. 1.5 mm including threadlike apex; pollinia spatulate or oblanceolate, slightly shorter than retinaculum. Follicles oblong-lanceolate, 6.5-11 × ca. 1.5 cm. Seeds elliptic, ca. 1.4 × 0.5 cm, margin membranous; coma ca. 2.5 cm. Fl. Aug-Oct, fr. Sep-Dec.
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