 Rocky outcrops, grasslands and shrublands account for the most common habitats and are dominated by lineages such as Velloziaceae, Cyperaceae, Poaceae and Eriocaulaceae.Although few plant families predominate in this ecoregion, species richness is high; the Espinhaço Range alone accounts for seven percent of the Brazilian flora, while all the mountain ranges comprising the entirety of "campo rupestre" harbor approximately 15% of Brazil's plant diversity.The relatively high levels of diversity in the "campo rupestre" can be explained by the environmental requirements unique to each habitat (or micro-habitat), which vary according to a wide range in latitude and altitude.