Glab. ± succulent perennial herb with slender to rather stout branching stems creeping, rooting at nodes; forming dense to loose patches up to 15 cm. or more across; stems often expanded and cormose at intervals, roots often bearing pale cormose submoniliform starch-rich swellings up to 2 cm. long. Lvs on filiform petioles (0·5)-1-(3) cm. long, expanded into a scarious sheath below, alt. or in alt. clusters; lamina (0·5)-1-5 cm. long, filiform to narrow-linear to narrow-spathulate, obtuse to subacute. Fls up to 2 cm. diam., solitary or paired or in few-fld racemes, on slender peduncles 1-3 cm. long. Sepals 2, enclosing petals in bud, ovate-oblong to suborbicular, ± 3 mm. diam.; petals us. white, sts rose, 6-8 mm. long, obovate. Capsule ± globose; seeds us. 3, ± 1·5 mm. diam, lenticular, smooth, glossy, dark brown to black.