A family of ca. 20 genera and 500 species mainly from the more arid regions of the southern hemisphere, especially Africa, South America, and Australia, fewer species in Asia, Europe, and North America; ca. 6 genera and 70 species occur naturaly in Austr

Portulaca - A genus of ca.100-125 species with nearly a worldwide, primarily tropical and subtropical, also temperate area distribution; about 15 species occur naturally in Australia.

McNeill, J. (1974). Synopsis of a revised classification of the Portulacaceae. Taxon 23: 725-728.

Carolin, R. C. (1987). A review of the family Portulacaceae. Australian Journal of Botany. 35: 383-412.

Nyananyo, B. L. (1990). Tribal and generic relationships in the Portulacaceae. Feddes Repertorum 101: 237-241.

Carolin, R. C. (1993). Portulacaceae. (1990+). The Families and Genera of Vascular Plants. 2: 544-555.