Malvaceae s.L. Juss. da Serra Negra, Minas Gerais, Brasil

Abstract

Serra Negra situates in the Complexo da Mantiqueira, Zona da Mata South of Minas Gerais State integrating the Corredor Sudeste of the Atlantic Forest where there are altitudes between 900 and 1700m. Its vegetation is typical of the rock outcrops distributed in mosaic of the landscap with field and forest environments. The Malvaceae family s.l. is represented in the area by eleven genera: Abutilon (5 spp.); Luehea (2 spp.); Pachira (1 sp.), Pavonia (2 spp.); Peltaea (1 sp.); Pseudobombax (1 sp.); Sida (5 spp.); Triumfetta (3 spp.) Urena (1 sp.); Waltheria (1 sp.); e Wissadula (1 sp.). The similarity analysis wos accomplished between Serra Negra and other fifteen localities with country and forest formation, of the Minas Gerais State, Rio de Janeiro State and Espírito Santo State. The Malvaceae species occur in field and forest, and five of the 11 genera occur in anthropogenic environments. Demonstrate that the flora of Malvaceae of the Serra Negra shows greater similarity to the Ibitipoca State Park (MG), urban forests of Juiz de Fora and Ecological Reserve Rio das Pedras (RJ). The similarity was lowest for Barbacena, Biological Reserve Represa do Grama, State Park of Rio Doce, Grão Mogol, Serra do Cipo, National Park of Itatiaia, State Park of Serra do Papagaio, Serra da Canastra National Park of Caparaó. The similarity values which group the Serra Negra with forest regions result from species widely distributed demonstrating homogeneity of environments caused by anthropogenic actions. This study, together with data of occurrence of different vegetation types in the Malvaceae, resulted in new record of Abutilon montanum endemic the Serra Negra, species known only by the collection-type and registering new occurrence of Abutilon amoenum for the flora of Minas Gerais.