Systematic Botany (2011), 36(1): pp. 227–230 © Copyright 2011 by the American Society of Plant Taxonomists DOI 10.1600/036364411X553298 A New Species of the Brazilian Endemic Genus Acritopappus (Compositae, Eupatorieae) from Minas Gerais Hortensia P. Bautista , 1 Santiago Ortiz , 2 , 3 and Juan Rodríguez-Oubiña 2 1 Departamento de Ciências da Vida, Universidade do Estado da Bahia, Rua Silveira Martins, 2555, Cabula. CEP 41150-0000, Salvador, Bahia, Brazil. 2 Departamento de Bioloxía Vexetal, Laboratorio de Botánica, Facultade de Farmacia, Universidade de Santiago, 15782 Santiago de Compostela, Galicia, Spain. 3 Author for correspondence: (
[email protected] ) Communicating Editor: Mark P. Simmons Abstract— A new species of the Brazilian endemic genus Acritopappus from the Serra do Cabral, in Minas Gerais state, is described. The new species, Acritopappus pereirae , is similar to A. confertus , the most widely distributed species in the genus, but differs in that the latter has conduplicate, chartaceous, glabrous to glabrescent, viscid leaves with entire margins, and an aristate pappus. The new species is illus- trated, the affinities between the morphologically related species and A. pereirae are discussed and a key to the species from Minas Gerais is provided. Keywords— Asteraceae , Brazil , Serra do Cabral , subtribe Ageratinae , systematics , taxonomy. Acritopappus R. M. King & H. Rob. (Compositae, Materials and Methods Eupatorieae) consists of 17 species of shrubs and small trees, This study was based on morphological analysis of specimens from mostly endemic to the northeast and southeast regions of the following herbaria: BHCB, CEPEC, HRB, HUEFS, K, SANT, and US Brazil ( Bautista 2000 ). The greatest diversity of the genus (herbarium acronyms follow Holmgren et al.