A floristic survey of Cyperaceae species in the Serra of Ouro Branco from Espinhaço Range, Minas Gerais State, Brazil, was carried out, based on field collections and herbaria survey. The following genera were confirmed according to their species richness: Rhynchospora (20 species), Bulbostylis (11), Eleocharis e Scleria (three species each), Cyperus and Lagenocarpus (two species each), Cryptangium, Fimbristylis, Lipocarpha, Machaerina and Trilepis (one species each), an overall of 46 species. Analytical keys for the identification of genera and species, descriptions and illustrations of the species, data on their geographical distribution and main habitats in the area are provided, as well as a glossary of morphological terminology used in the Cyperaceae.
campo rupestre; diversity; conservation; Espinhaço range; taxonomy
