Flora de Grão-Mogol, Minas Gerais, Brasil

Abstract

The general data on the project of survey of the vascular flora of the Serra de Grão-Mogol, a part of the Espinhaço Range of mountains, are presented. They ai e based upon collections obtained during 21 expeditions to that area in northeast of the State of Minas Gerais. More than 100 researchers worked in the identification and compilation of the taxonomie treatments for the families, each one including identification keys, descrip- tions and illustrations of genera and species, as well as data on their geographic distribution and habitats. In this introduc- tion to the Flora, basic data on the geomorphology, climate and vegetation of the Serra de Grão-Mogol are presented, followed by description of the methods employed, general foiinat of the taxonomie treatments, and a brief discussion of the main results obtained. In the region occur 15 families of ferns, with 22 genera and 40 species, one species of gymnospei ins, and 113 families of angiosperms, with 444 genera and 1032 species. At least 59 species of flowering plants are endemic to the region of Grão-Mogol. The five richest families are Leguminosae (104 spp.), Compositae (76 spp.), Melastomataceae (43 spp.), Rubiaceae (42 spp.), and Gramineae (41 spp.). Following to this introductory article, the taxonomie treatments will be presented in alphabetical order.