Straggling, scrambling or procumbent herb 1–3.6 m. long, often with many lateral branches from the main stem; stems 4-angular, pubescent on the angles but at length glabrous. Leaf-blades often rather yellowish green, elliptic, 1.8–6.3 cm. long, 0.7–2.8 cm. wide, acute at the apex, narrowed to the base, scabrid above with dense very short to longer tubercle-based hairs, pubescent beneath; petiole 1–5 mm. long; stipule-bases 1–2 mm. long with lines of hairs, bearing 5–7 setae 1–7 mm. long. Flowers usually few in axillary clusters at most nodes, the inflorescences up to 1.2 cm. in diameter in fruiting stage. Calyx-tube glabrous, obconic, 1.5–2 mm. long; lobes 4, often unequal, oblong-lanceolate or narrowly triangular, 1.5–3 mm. long, 0.8 mm. wide, ciliate. Corolla mauve or white; tube glabrous, funnel-shaped, 1.8 mm. long; lobes triangular, 1 mm. long, 1 mm. wide, with a few hairs outside. Filaments exserted 0.5 mm. Style exserted 1.5 mm., minutely papillate. Cocci 1/2-oblong-ellipsoid, 3.5–5 mm. long, 2.5 mm. wide, 1.2 mm. thick or sometimes more globose, quite definitely not readily dehiscent. Seeds dark blackish red, compressed ellipsoid, 2–4 mm. long, 1.5 mm. wide, 0.8 mm. thick, with a broad ventral groove, finely rugulose. Fig. 48/8–10, p. 338.
