Slender twiner with silky hairy new shoots; older stems angular with cuticular ridging; hairs uniseriate with a thickish base of about 3 brown cells topped by an elongated white cell. Early seedling leaves tripartite with petioles as long as the blades, becoming trilobed and then entire by about the 20th node, ovate, silky hairy. Adult leaves linear, 10–20 (–30) mm long, 2–3 mm wide, both surfaces very silky-hairy, eventually glabrescent, margin undulate; petiole 1–2 mm long. Inflorescences cymose, 1–3 tiny nodding flowers; rachis to c. 10 mm long; flower stalks 6–7 mm long, silky hairy. Sepals 2–3 mm long, narrowly triangular, densely hairy. Petals obovate, 6–8 mm long, c. 2 mm wide, blues, mauve, fading with age. Stamens with the anthers longer than filaments, apically cohering in bud until anthesis then free, sagittate; dehiscing through slits acting as pores. Pistil without a basal nectary, ovary pink-mauve, ridged, dense hairy, incompletely bilocular; style short; stigma eventually capitate. Fruits berry-like with seeds in separate dry cells with a papery liner, slender-fusiform, less than 10 mm long, dark green or purple. Seeds red-brown, muricate.
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