Annual, prostrate herb with compressed, ascendingly branched stems up to 50 cm long, greyish hairy. Leaves alternate, simple; stipules absent; petiole up to 0.5 cm long; blade asymmetric, oblong or obovate, 0.5–3 cm × 0.5–1.5 cm, margin crenate, veins in 4–6 pairs, impressed above, prominent below. Flowers solitary, extra-axillary, bisexual, 4-merous, almost sessile, small; calyx c. 1.5 mm long, slightly accrescent in fruit; corolla up to 2 mm long, with cylindrical tube and small lobes, white; stamens inserted at about the middle of the corolla tube, included; ovary superior, style bifid nearly to the base. Fruit initially splitting into 2 halves, later each half into 2 one-seeded nutlets with a distinct beak. |