A root-climbing or epiphytic shrub; stems nearly glabrous; petioles of the larger leaves 4-10 cm. long; leaf-blades thin, ovate or ovate-oblong, 12-20 cm. long, about two--thirds as wide, sharply acuminate, conspicuously serrate, cordate at base, 7-nerved, essentially glabrous; smaller leaves 1-5 cm. long; cymes usually 3-flowered, branched at base; hypanthium urceolate, 2-2.5 mm. long, bristly; sepals triangular-ovate about 1 mm. long from the torus; exterior teeth foliaceous, oblong, up to 5 mm. long, long-ciliate.
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