Climbers; indumentum grayish to dull yellow. Stems puberulent, glabrescent. Petiole 2.6-10.8 cm; leaf blade cordate-circular, 7.5-16.5 X 5.3-15 cm, smooth to rugulose, abaxially silvery villous. Panicle crowded; bracts cordate. Pedicel 2-4 mm, elongating in fruit. Flowers (4-)5-6(-7) mm. Sepals lanceolate-linear, flat or concave, equal, 1-2 mm, tomentose-villous abaxially. Fruiting calyx tan, reddish, or pale brown, loosely clasping; outer 3 sepals elliptic-oblong to narrowly ovate, 1.6-2.2(-2.4) cm X 7-9 mm, puberulent, margin free. Corolla white to cream, narrowly funnelform; limb (3-)5-7 mm in diam., 5-lobed. Stamens included, ± equal; filaments glabrous. Disc absent or ringlike. Ovary glabrous. Style obsolete; stigma subsessile. Fruit tan to brownish with darker lines, globose-ellipsoid, 5-6(-7) X 4-5 mm, pubescent, apiculate. Seeds dark brown, globose-ellipsoid, 4-6 X 3-5 mm, glabrous. Fl. Oct-Dec, fr. Mar-Apr. 2n = 26.
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