a slender much-branched half-climbing shrub, 5–8 ft. high; branches scattered, somewhat spreading; stems and branches conspicuously ribbed, glabrous or minutely puberulous especially when young, ribs horny, colourless; leaves alternate, scattered, spreading, ovate or elliptic-lanceolate, acute, narrowing at the base into a more or less distinct petiole, mid-rib and two lateral parallel veins usually prominent, subcoriaceous, subglabrous or minutely puberulous especially on veins and margins, 1/2–1 1/2 in. long, 2–8 lin. broad; petiole up to 3 lin. long, usually minutely puberulous; flowers creamy-white (Galpin), solitary or in 3-flowered cymules in the axils of leafy bracts arranged in lax racemes; bracts ovate-lanceolate, acute, leaf-like; peduncles minutely puberulous; bracteoles linear, acute or subulate, minutely puberulous, 1–2 lin. long; perianth 2 3/4–3 1/4 lin. long, with or without 5 subdependent glandular bodies or callosities at the base and with 5 external ribs continued down the ovary, ribs and perianth externally subglabrous or minutely puberulous; perianth-tube 2–2 1/4 lin. long; segments ovate-lanceolate, acute, spreading, 3/4–1 lin. long; stamens partly exserted; filaments inserted just below throat of perianth-tube, 1/2– 3/4 lin. long; anthers 1/3 lin. long, attached at the apex by a tuft of long perianth-hairs; style 2–2 3/4 lin. long; fruit ovoid or subglobose, 2 1/2–3 lin. long; 2 1/2 lin. in diam. (4–5 lin. in diam., Harvey), smooth, with depressed ribs and reticulations. null