Stems twining, sparsely to rather densely brownish strigillose. Leaves elliptic or elliptic-ovate, 10-17 by 4-8 cm, rounded at the base, shortly acuminate and mucronulate at the apex, subcoriaceous, dark green, glossy and glabrous above, paler green, glossy and sparsely strigillose beneath, mainly on the midrib; midrib and 7-8 nerves on either side prominent beneath; petiole 1.5-3 cm, strigillose like the stems. Peduncles slender, 10-16 cm long, 1-1½ mm thick, strigillose like the stems, umbellately branched at the apex with 3-5 branches; primary branches 1.25-4 cm long, secondary ones shorter, 0.75-1.25 cm long, tertiary if present still shorter. Pedicels 4-5 mm long, thickened towards the apex, densely silvery strigillose. Bracts linear or linear-lanceolate, c. 4 mm long, or the lower ones up to 8 mm long, soon caducous. Two outer sepals orbicular, c. 5 mm long, three inner ones orbicular or slightly broader than long, as long as the outer ones or a little shorter, all densely silvery strigillose outside; sepal 3 with one glabrous margin outside, sepals 4 and 5 with two glabrous ones. Corolla 5-parted, pinkish purple inside, white outside; tube cylindrical, c. 5 mm long, glabrous, lobes linear, recurved or rolled backwards, c. 18 mm long, appressed pilose outside, at the apex with a small glabrous lobule at one side (or sometimes at both sides). Filaments glabrous, inserted c. 4 mm above the corolla-base, without tooth at their ventral side. Ovary glabrous, 2-celled. Fruit unknown.
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