Climbers; indumentum yellowish to rust colored. Stems appressed pubescent, glabrescent. Petiole 2.1-5 cm; leaf blade broadly ovate-cordate to nearly circular, 5.8-13 X 4-10.5 cm, smooth to slightly rugulose, abaxially densely villous. Panicles crowded; bracts ovate, leaflike, small to very small. Pedicel 3-5 mm, elongating in fruit. Sepals lanceolate-ovate, flat or concave, ± equal, 1-1.5 mm; inner 2 falcate, villous abaxially. Fruiting calyx spreading, pale tan to brownish; outer 3 sepals ovate-oblong to elliptic-oblong, 1.5-2.2 X 0.7-1.3 cm, ± puberulent abaxially, margin free. Corolla white or cream, campanulate-funnelform; limb 3-5 mm in diam., 5-lobed, outside dull yellow villous distally. Stamens unequal, 3 exserted; filaments basally pubescent. Disc ringlike. Ovary velutinous. Style longer than ovary. Fruit dark brown, globose-obovoid, 4-6(-8) X 3-5 mm, dull yellow pilose, apiculate. Seed reddish to black-brown, globose, ca. 3 mm in diam., smooth, glabrous or puberulent, glabrescent. Fl. Sep-Dec, fr. Dec-Apr.
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