MIMOSOIDEAE (FABACEAE) DA REGI?O DO MANSO, ANT?NIO DIAS, MINAS GERAIS: DISTRIBUI??O GEOGRáFICA E SIMILARIDADE FLORíSTICA NA FLORESTA ATL?NTICA

摘要

Manso’s region is located at 785m of altitude in Ant?nio Dias town, east of Minas Gerais State, Brazil, which is in the Atlantic domain in a formation of Seasonal Semideciduous Montane Forest. In the inventory of Mimosoideae of that region, it wase found nine taxa which are analyzed regarding the limits of geographic distribution and only the arboreal are evaluated as floristic relation indicators? between the region of Manso and other areas of southeastern Brazilian Atlantic forest. They are: Senegalia martiusiana (Steud.) Seigler & Ebingler, Anadenanthera colubrina (Vell.) Brenan var. cebil (Griseb.) Altschul, Anadenanthera peregrina (L.) Speg, Inga vera subsp. affinis (DC.) T.D. Penn., Mimosa debilis Humb. & Bonpl. ex Willd. var. debilis , Mimosa pellita Humb. & Bonpl. ex Willd. var. pellita , Piptadenia gonoacantha (Mart.) J.F. Macbr., Plathymenia reticulata Benth. and? Stryphnodendron polyphyllum Mart. Five geographical distribution standards had been established: 1. Anfiatlantico (1sp.); 2. Neotropical (1sp.); 3.South America Occidental-Center-Oriental (4spp.); 4. Brazil Center-Oriental (2spp.); 5. AtlanticBrazil Northeast-Southeast (1sp.). The taxa according to their preference habitat were labelled as floristic general elements (100%) and specialist elements (0%) of the Atlantic domain. The results show greater similarity between Manso and the forest stretches located in high elevations. There are floristic similarities between the dense mountain rain and seasonal semideciduous southeastern forest, supporting the proposal of common origin of these phytophysiognomies.