A taxonomic treatment of the species of Evolvulus L. from Morro do Chapéu, on the Chapada Diamantina, Bahia, is presented. The floristic survey revealed 12 Evolvulus taxa: E. argyreus Choisy, E. echioides Moric., E. elegans Moric., E. glomeratus Nees & Mart., E. gnaphalioides Moric., E. gypsophiloides var. confertus Choisy, E. jacobinus Moric., E. latifolius Ker Gawl., E. linarioides Meisn., E. linoides Moric., E. pohlii Meisn. and E. pterocaulon Moric. This is the first report of E. argyreus for Brazil. We propose the re-establishment of E. echioides and E. gypsophiloides var. confertus. An identification key, descriptions and illustrations of the species are given.
Evolvulus; Convolvulaceae; Chapada Diamantina; flora; Morro do Chapéu
