Stem straggling or prostrate, (0.15–)0.5–1 m. long, rooting at the nodes, the flowering shoots ascending to 10 cm., the younger parts with dense violet or ferruginous adpressed hairs, the older parts more sparsely pubescent. Leaf-blades ovate or elliptic-ovate, 0.6–8 cm. long, 0.5–4.8 cm. wide, obtuse to acute at the apex, very shortly mucronulate, gradually cuneate or rounded then narrowly cuneate at the base, sparsely to fairly densely adpressed pubescent above and beneath; petiole 0.3–4 cm. long, adpressed pubescent; stipule-sheath 1–2 mm. long, divided into 3–5 fimbriae, 2–5 mm. long; colleters mostly fairly evident. Flowers 1–3, axillary and terminal, opening one at a time, sessile, isostylous, both stamens and style exserted. Calyx-tube subglobose, 1.2–1.5 mm. long, pubescent; lobes linear-oblong or slightly spathulate, (1–)1.5–6 mm. long, 0.4–1.25 mm. wide, pubescent, the base sometimes triangularly widened in fruit and veined. Corolla white or bluish lilac or blue; tube 0.8–1.7 cm. long, pubescent or sometimes glabrescent outside; throat glabrous or somewhat hairy; lobes elliptic-oblong, (1.7–)4–7 mm. long, 0.6–2 mm. wide. Stamens exserted; filaments 2–4 mm. long. Style slightly exserted to 2 mm. or only as long as the tube; stigma well exserted, 1.6–3 mm. long. Capsule oblong or obconic, 2–3.5 mm. long, 2.5–3 mm. wide, ribbed, speckled with dark resin patches, sparsely hairy; fruiting pedicels up to about 1.5 mm. long.