A family of 5 genera and 16 species; native to tropical and subtropical America.
Martynia - A monotypic genus originally from Mexico but now naturalised in several tropical and subtropical regions including Australia. Backer (1951).
Backer, C.A. (1951). Pedaliaceae. In 'Flora Malesiana.' Ser. 1, Vol. 4, (P. Noordhoff Ltd: Groningen.), pp. 216-221.