Stems twining, glabrous or nearly so. Leaves ovate to elliptic, 6-12 by 3½-8½ cm, thinly coriaceous; base rounded or slightly retuse, apex obtusish or acutish or shortly acuminate, glabrous on both sides or nearly so; midrib prominent beneath, sulcate above; nerves 5-8 on either side, not or ± distinctly prominent beneath, minor nerves parallel, distinctly visible beneath; petiole rather short, 1½-4 cm, glabrous or nearly so. Peduncle terete, often curved at its base, 3-15 cm, glabrous or shortly appressed-pilose, mainly towards the apex, umbellately cymose, up to 6-flowered. Pedicels as long as or longer than the calyx, 5-9 mm, in fruit 10-18 mm, shortly appressed-pilose. Bracts at base of cyme linear, up to 12 mm long, sparsely pilose, upper ones shorter. Sepals slightly unequal, sparsely appressed-pilose with very short hairs; 2 outer ones ovate-triangular, obtuse, ca 5 mm long, 3 inner ones orbicular to transverse-ellptic with rounded to emarginate apex; sepal 3 with one, sepals 4 and 5 with two narrow, glabrous, reddish margins, 6-6.5 mm long. Corolla deeply 5-lobed (only one not fully expanded corolla could be examined), white, tube ca 5-6 mm long, lobes oblong, ca 12-13 mm long, consisting of the midpetaline band with a narrow, thin, glabrous wing on either side along the whole length; midpetaline band glabrous except for the apical portion. Filaments sparsely pilose at the base; ovary glabrous, probably 2-celled. Fruit ellpsoid, ca 15 mm long, its base enclosed by the cupular calyx.
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