Vines; stem deeply 5-sulcate, puberulent, often also sparsely pilose, glabres-cent. Leaves elliptic ovate, 9-21 cm long, 6-11 cm wide, the apex acuminate, the base truncate, the margin remotely denticulate, subcoriaceous, the upper surface sparsely pubescent on the primary nerves, otherwise glabrous, finely reticulate nerved, slightly bullate, the lower surface pubescent, densely so on the nerves, conspicuously reticulate nerved; petiole 0.8-2.5 cm long, pubescent, often also sparsely pilose; tendrils slender, simple or unequally 2-branched, pubescent, often also sparsely pilose. Staminate flowers axillary in sessile or subsessile, few-flowered clusters; calyx campanulate, ca. 3 mm long, the outer surface densely brown pilose, the inner surface pilose near the top, otherwise glabrous, the lobes subulate, ca. 3 mm long, densely brown pilose, spreading or reflexed; corolla greenish, triangular, 0.5 mm long, the outer surface pilose, the inner surface densely pubescent; filaments stout, ca. 0.5 mm long, pubescent at the base, the anthers complicate, forming an irregular head 2.5-3.0 mm long and nearly as wide; pistillode obsolete. Pistillate flowers not seen. Fruits yel-lowish orange, globose, ca. 3 cm in diameter, sparsely brown pilose, the peduncle ca. 5 mm long; seeds not seen.
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