Slender, succulent, annual herb usually forming matted patches; stems much-branched, often ± umbellately so; branches creeping or ascending, ± flattened with membranous wings, glabrous or with sparse flattened jointed hairs. Lvs sessile, 2.5-4-6 × 1-3 mm, oblong to almost ovate, glabrous or sparsely white-hairy; upper ⅕-⅓ digitately divided into 3-5-(7) subacute to acute linear segments 0.5-2 mm long, the middle segment usually > lateral segments. Fls subsessile or on pedicels to 10 mm long. Calyx 3-4-(5) mm long, glabrous or occasionally setose at tips, divided c. 1/2 way. Corolla white, (6)-10-13 mm long. Anthers yellow to golden brown, glabrous or with a few marginal hairs; awns small. Capsule < calyx, 2-3 × 1-1.5 mm.