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Erect to trailing perennial succulent shrublets. Lvs opposite, sessile, 3-angled to terete, papillate; papillae glittering. Fls solitary or in cymes on short lateral branchlets, pedicellate, ebracteate. Sepals 5: 3 triangular with expanded membranous margins, 2 clavate. Petals numerous, > sepals, free; stamens numerous; staminodes often present. Placentation parietal. Stigmas 4-6, filiform to lanceolate or plumose. Capsule 4-6-locular; expanding keels contiguous, parallel or diverging; wings present; locules with lids; placental tubercle reduced or 0. Seeds small, ribbed and tuberculate.
Low, succulent perennial herbs with terete, hirsute trailing stems. Leaves clustered on short shoots, opposite, connate, semi-cylindrical, the upper portion somewhat expanded, glaucous, densely papillose. Flowers solitary, terminal on erect short shoots, pedicellate. Sepals 5, papillose. Petal-like staminodes many, white; stamens many. Styles 5; ovary inferior; locules 5; placentation parietal. Fruit a hygroscopic capsule; valves winged; expanding keels parallel or divergent; locules roofed; placental tubercle very small or absent. Seeds many, small, rough, light brown.
