Perennials; culms low or moderately tall. Leaf-blades flat or rolled. Inflorescence a terminal spike with a terminal spikelet. Spikelets alternate, sessile, sunken in cavities of a disarticulating rachis, falling off with rachis-internode, lower glume about 3 mm long, shortly awned; the upper nearly as long as the lower, the terminal spikelet about as long as, and resembling the upper glume; upper glume of lateral spikelets longer than rachis-internode, acute to acuminate, coriaceous, closely nerved, abaxial; upper glume of terminal spikelet thinly membranous, 2-nerved; lodicules 2; stamens 3; ovary glabrous, the styles 2, distant. Caryopsis free, ovate, dorsally compressed, glabrous.
About 15 species distributed in coasts of Eastern Africa, Madagascar to Australia and Polynesia.
Only one species, L. repens is found on the coral rock at the tiden line in Taiwan.