Dwarf, cushion-forming, perennial herb, 10-40 mm tall, base ± woody. Leaves pseudo-verticillate, linear, tip shortly apiculate, stipules persistent, white, membranous, with fimbriate margins. Flowers usually 3 in leaf axils, sepals with membranous margins, stamens 5.
Prostrate, mat-forming annual, with wiry branches. Leaves in a basal rosette and in whorls on stem, linear-subterete, apiculate, fleshy, stipules membranous, fimbriate, whitish. Flowers crowded at nodes, green and white.
Prostrate, mat-forming annual with wiry branches. Leaves whorled, linear-subterete, apiculate, fleshy. Flowers crowded at nodes, green and white.