Descriptions : Vine Twining vine; stem 4-angled, green and purple; leaves opposite, with short petiole; leaves narrowly ovate, with acute, apiculate apex and subcordate or truncate base, somewhat rough to the touch; inflorescence axillary, seemingly a cyme; short peduncle, pedicels twisting; bracts like small leaves; bracteoles 2 at base of flower, ovate, keeled, apex ±
rounded or obtuse, apiculate or not, base subcordate; calyx with 9-15 subulate lobes, connate basally; lobes green, with glandular margins; corolla white, salver-shaped, tube slightly curved, 5 lobes; lobes strongly overlapping in bud; glandular, erect hairs on outside of corolla; stamens 4, adnate to corolla tube, not exserted; inserted at same level in corolla tube, didynamous; hairs at base of filaments; anthers with 1 or more hairs at base of each locule; pollen spinulose; ovary green, glabrous, with 2 locules; annulus surrounding ovary; style filiform; stigma with 2 lobes, peltate, funnel-like; 2 ovules per locule.
