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Herbs perennial. Rhizomes absent. Stems creeping or decumbent proximally. Leaves distichous or spirally arranged. Cincinni terminal and/or axillary, paired or aggregated, less often solitary; involucral bracts not spathelike; pedicels very short. Flowers actinomorphic. Sepals 2 or 3, free. Petals 2 or 3, free, lanceolate. Stamens (1--3 or)6, all fertile, very rarely 1 or more becoming staminodes, subequal; filaments usually glabrous; anther locules rounded, longitudinally dehiscent, connectives broad and square, triangular, or oblong, rarely narrow. Ovary oblong, subtrigonous, 2-or 3-loculed; ovules 2 per locule. Capsule 2-or 3-valved. Seeds (1 or)2 or 3 per valve, shortly cylindric, trigonous, rugose or radiate striate; hilum orbicular, minute.
Small prostrate succulent herbs (in Panama); stem branching repeatedly, rooting at the nodes. Leaves sheathing at the base. Inflorescences terminal, also occasionally in the upper nodes, umbelliform, few-flowered, subtended by 2 small foliaceous bracts similar to the upper reduced leaves. Sepals 3, equal, scarious or very slightly foliaceous. Petals 3, essentially equal. Stamens 6 (in Panama), all fertile and essentially similar. Pistil 3-celled.
