Coll. Bot., index (see also plate 4 and text on facing page). 1821.
Herbs, annual or short-lived perennial, 0.2-1 dm. Stems 5-10-branched, repent or prostrate, sometimes mat-forming. Leaf blades broadly ovate to orbiculate, paired blades only slightly unequal, 1.5-6 × 1.6-5 mm, margins entire. Inflorescences crowded. Flowers ca. 0.2-0.3 mm across. Achenes uniformly light brown, slightly compressed, ovoid-cylindric, ca. 0.4 × ca. 0.3 mm, pebbled.
Phenology: Flowering fall–spring (sporadically throughout summer).
Habitat: Hammocks, waste places
Elevation: 0-10 m
Fla., West Indies, Central America, South America (Colombia).