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.

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