Resumo

VARGUEZ-VAZQUEZ, Claudia; ORTIZ-DIAZ, Juan Javier; TUN-GARRIDO, Juan  e  GARCIA-GIL, Gerardo. Vascular flora of the savannas of Xmabén, Hopelchén, Campeche, Mexico. Polibotánica [online]. 2012, n.34, pp.1-19. ISSN 1405-2768.

In the Yucatan peninsula, savannas are distributed as small enclaves clearly delimited by tropical forest tree. Savanna flora is of a great botanical interest, because it is determined by soil conditions. The aim of this study was toidentify and describe the flora and ways of life of two sheets in Xmaben, Campeche. As a result 127 species belonging to 97 genera and 41 families were recorded. Poaceae, Fabaceae, Cyperaceae, Malvaceae and Convolvulaceae had the largest number of genera and species. The richest genera were Paspalum (six), Cyperus (five), Eleocharis (four), Echinodorus, Ipomoea, Mimosa and Panicum (three each). The herbaceous plant life form was the best represented with 94 species (74.01%). The Jaccard similarity index was 0.157, since the two savannas share only 19 species out of 127. The absence of introduced plants in the sites is a strong indicator of its natural origin.

Palavras-chave : savanna; flora; Campeche; Yucatan peninsula; Mexico.