Glab. perennial herb with ∞ branches arising from a stout stock. Stems up to ± 4 dm. long, branching, prostrate, rooting at nodes or sprawling. Lvs fleshy, alt. or occ. fascicled, on petioles up to 15 mm. long. Lamina (5)-7-15-(25) × (2)-4-6-(10) mm., narrow-obovate to narrow-spathulate. Fls 6-7 mm. diam., axillary, solitary, on peduncles ± 10 mm. long. Receptacle adnate to lower half of ovary; calyx with acute triangular to ovate lobes ± 4 mm. long; corolla broadly ovate-oblong, white, ± 6 mm. long. Style slender, stigma capitate; capsule 4-5 mm. diam., broad-ovoid.