Perennial herb with straggling or prostrate stems 15–50 cm. long, woody at the base, glabrous or with sparse pubescence in the longitudinal grooves and two rows of pubescence descending from the outer margins of the stipule bases.
Capsule 3–4.5 x 3–4 mm, subglobose or ovoid, ± faintly wrinkled in dry state and with numerous resin blotches, glabrous or shortly pubescent, the valves finally opening very widely.
Calyx glabrous or pubescent; tube c. 2 mm. long, obconic; limb tube c. 1.2 mm. long; lobes 2–4 x 0.8–1.4 mm., lanceolate, glabrous or with short marginal setae.
Anthers short, curved and medifixed, exserted about 1 mm.; style exserted 2–3 mm., the stigmatic head biglobose 1.2 mm. wide.
Seeds brown, 2.5–3.5 x 1.8 x c. 1.2 mm., ± oblong, minutely rugulose dorsally, shiny, ventrally with broad depression.
Corolla white; tube 3.5–4 mm. long, narrowly funnel-shaped; lobes 3.5 x 1–1.2 mm., lanceolate-elliptic.
Flowers 2–6 at each node, the apparent pedicel becoming short and thick, 2 mm. long in fruit.