Suberect or ascending annual herb to c. 15 cm high, glabrous, often somewhat glaucous. Leaves subopposite or opposite, sessile or with petioles to 1.5 mm long; lamina spathulate to obovate, 6–12 mm long, 1–4 mm wide, obtuse to rounded, usually shortly apiculate, margins flat to recurved; stipules entire, membranous, 0.8–1.3 mm long. Inflorescences of short racemes, 0.3–0.8 cm across; rachis usually elongating after anthesis; bracts narrow-obovate, to c. 4 mm long. Pedicels to c. 1.5 mm long, those of females elongating to c. 9 mm in fruit. Sepals usually 5, obovate, 0.5–1.5 mm long, white, green or pink. Petals oblanceolate, to c. 0.5 mm long, white or pink. Male flowers with 5 stamens, filaments free; female flowers with 3 deeply 2-partite styles. Capsule 1.5–2.5 mm diam., 3-lobed; seeds wedge-shaped, 0.5–1 mm long, tuberculate, white. Flowers mostly Sep.–Apr.