Sesuvium humifusum (Turpin) Bohley & G. Kadereit

Cypselea humifusa Turpin, Ann. Mus. Paris 7: 219. 1806
Radiana petiolata Raf. Specchio 1: 88. 1814.
A much-branched herb, forming mats up to 20 cm. or more in diameter; leaf-blades elliptic, 1.5-6 mm. long, 0.8-3 mm. broad, or sometimes larger, obtuse or rounded at the apex, acute or rounded at the base, entire; petioles slender, sometimes nearly as long as the leafblades; flowers axillary, greenish, short-pedicelled; calyx-lobes ovate or elliptic-ovate, 1-1.5 mm. long, 0.7-1 mm. broad, obtuse or acutish; filaments filiform; anthers about 0.3 mm. long; capsule subglobose, 1.5 mm. in diameter; seeds brown, 0.2-0.3 mm. long.
Type locality: Santo Domingo.
Distribution: Florida; California; Cuba; Hispaniola; Water Island, St. Thomas; Anagada; Guadeloupe; Margarita.