This work deals with species of the lichen genera Bulboihrix (16), Relicina (2), Myelochroa (2), Parmelinella (1), Parmelinopsis (6) and Hypotrachyna (3) (ciliate species) growing in the brazilian "cerrado" vegetation. All types of cerradoes were investigated, since almost open fields to forestal formations and including altitude rock fields, gallery forests and others placed inside cerrado areas. Altogether 30 species were found and are described in detail. B. linteolocarpa M.P. Marcelli and B. subklementii M.P. Marcelli are new species. The new combination Parmelinella versiformis (Kremp.) M.P. Marcelli is done. B. sensibilis (Steiner & Zahlbr.) Hale is new for Brazil. B. meizospora (Nyl.) Hale and Parmelinopsis jamesii (Hale) Elix & Hale are new for the American Continent.
lichens; cerrado; systematics; Bulbothrix; Relicina; Parmelina; Myelochroa; Parmelinella; Parmelinopsis; Hypotrachyna