Spreading, prostrate, somewhat succulent annual to c. 20 cm diam. Leaves narrow-elliptic, 2–5 mm long (including pseudopetiole c. 1 mm), 0.7–1.5 mm wide, apex subacute; stipular sheath 0.5–1 mm long, pale, 2–6-toothed or narrowly lobed on each side. Flowers 1 or 2 per axil; pedicels 1–2 mm long at anthesis, elongating to c. 4 mm in fruit; hypanthium c. 0.5 mm long at anthesis, cupular, slightly compressed, wider than long; sepals erect, narrow-triangular, about as long as hypanthium; petals triangular, slightly exceeding sepals, pale, membranous; stamens subequal to sepals; style c. 0.2 mm long. Capsule cupular, c. 1 mm long, 2 mm wide, slightly flattened; seeds elliptic, irregularly trigonous, c. 0.5 mm long, blackish, shining, alveolate, 20–40 per capsule.
MuM, MSB. Also WA, NT, SA, Qld, Vic. Known in Victoria from only 2 recent collections (1999, 2011) from the Murray River floodplain downstream of Robinvale, where occurring in chenopod shrubland and Black Box (Eucalyptus largiflorens) grassy woodland, and from Neds Corner Station, where occuring in shallow depression in chenopod shrubland.
