O gênero Sida L. (Malvaceae) no estado de Pernambuco, Brasil

Abstract

Several taxa of subfamily Malvoideae, Malvaceae, presents complex classification problem. Sida L. is inserted in Malvea tribe, comprising about 200 species cosmopolitan and pantropical, whose biodiversity centres are the African and American continents, composed of twelve sections currently accepted. In Brazil, are found approximately 90 species. This paper aims to develop a taxonomic study of the genus Sida L. occurring in Pernambuco, seeking, through the variability characters interpretation, clarify their limits interspecific more complex. For production data, samples were collected in several municipalities and phytogeographic regions of the state, as well as periodic reviews of collected and herborized specimens, especially those of Pernambuco, and consultations with photographs of type collections from herbaria national and international complemented by research literature and protologues. About 25 species were referred to Pernambuco. From further studies, were found about sixteen species of the genus to the state: Sida acuta Burm.f., S. angustissima A.St.-Hil., S. brittonii León, S.cerradoensis Krapov., S. ciliaris L., S. cordifolia L., S. galheirensis Ulbr., S. glomerata Cav., S. jussieana DC, S. linifolia Cav., S. planicaulis Cav., S.rhombifolia L., S. setosa Mart. ex Colla, S. spinosa L., S.ulei Ulbr. and S. urens L. Identification key are supplied, as well as descriptions, distribution maps, comments on relationships and geographic distribution and species`s illustrations of morphological characters most relevant to species delimitation.