Cosmopolitan, greatest occurrence in temperate regions.
Genera 4, species ca. 140 (2 genera, 16 species in the flora).
Species of Bruchiaceae commonly occur on soil, often as colonizers. The family was well-characterized by W. R. Buck (1979), who recognized four genera and suggested a transitional position between Dicranaceae and Ditrichaceae. The two genera represented in the flora area are quite different but share the salient well-developed capsule neck.