Perennial much-branched herb up to 20 cm. long, glab., succulent and glaucous, rooting from fleshy rhizome. Lvs linear, up to 20 × 3 mm., acute. Fls solitary and terminal, peduncles 10-15 mm. long. Sepals 5, subulate, acute, 8-10 mm. long, each with 3 strong ribs; petals half length of sepals, white, deeply divided into 2 narrow lobes; stamens 10, filaments long opp. sepals, short between sepals; styles 3, ovary c. half as long as sepals when mature, splitting into 6 broad lobes; seeds few, flattened, 0·5 mm. diam., covered with close-packed clavate papillae, brown.

Glabrous fleshy tufted perennial. Stems erect, terete, becoming 4-angled when dry, 2-10-(15) cm tall. Lvs very fleshy, glaucous, sessile, linear to linear-lanceolate, acute, (10)-15-20 × 2-3-(5) mm; marginal vein indistinct. Infl. 1-3-flowered. Bracts leaflike. Pedicels erect, 10-15 mm long. Sepals linear-oblong, acute, 3-veined, 7-11 mm long; margins very narrowly scarious. Petals < sepals. Stamens 10. Capsule ovoid, much < calyx. Seeds rusty brown, about 1.5 mm long, covered with long narrow papillae.