Sida capitata Linnaeus, Sp. Pl. 2: 685. 1753

Flowering year-round. Disturbed vegetation, thickets, roadsides, cultivated fields; 0–300 m; Fla., La., Tex.; Mexico; West Indies; Central America; South America; introduced in Asia (Malesia).

Malachra capitata is introduced in Malesia according to J. van Borssum Waalkes (1966), who synonymized M. capitata and M. alceifolia Jacquin. The Louisiana records are thought to represent adventive or introduced populations. Those in southern Florida and Texas are accepted as native populations.