Succulent, glabrous aquatic annuals with erect stems from a creeping rhizome. Roots numerous at each rhizome node, stout, with many long thin side roots. Stems up to 25 cm long, and up to 7 mm in diam., unbranched or with a few short side branches, succulent. Leaves reduced below, upper fairly close toÂgether, narrowly ovate, up to 4 cm long and 1 cm broad, attenuate below, shallowly serrate, thin; stipules small. Flowers small, in many-flowered, tight clusters, sessile or very shortly pedicellate. Sepals narrowly ovate, 1,5 mm long, membranous with entire margins. Petals narrowly ovate, slightly longer, pale lilac. StaÂmens 10. Ovary globose, styles short. Capsule globose, the valves flattened and recurved at dehiscence; seeds subcylindrical, straight or slightly bent, 0,8 mm long, tesselate, shiny yellow brown. Fig. 6: 4.
