Lianas to 4 m, puberulent. Stems slender, pubescent along 1 line, glabrescent. Petiole 1-1.5 cm, with 8-11 adaxial basal glands; leaf blade oblong-elliptic, 5.5-9.5 × 2-3.5 cm, membranous, puberulent, base cuneate, apex acuminate; lateral veins 5 or 6 pairs. Inflorescences solitary, to 30-flowered; peduncle 7-13 cm. Pedicel 1.2-1.7 cm. Sepals ovate, ca. 1.5 × 1 mm, puberulent. Corolla greenish white, ca. 9 mm in diam.; tube ca. 2 mm, glabrous; lobes ovate-triangular, ca. 4 × 4 mm, margin ciliate. Corona lobes globose. Anthers oblong, appendages covering stigma head; pollinia spatulate. Gynostegium exserted from corolla tube. Ovaries glabrous. Stigma head conical, base pentagonal. Fl. Jul.
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