A new species of Chamaecrista sect. Chamaecrista ser. Flexuosae (Leguminosae, Caesalpinioideae) from Serra do Cipó, Minas Gerais, Brazil

A new species, Chamaecrista truncata, from southeastern Brazil, is described, illustrated and compared to its putative closest relative, C. parvistipula. The new species belongs to Chamaecrista sect. Chamaecrista ser. Flexuosae which is characterized by asymmetrical leaflets with palmate venation, quadrangular stems and axillary peduncles. Additionally, the venation pattern of the leaflets and the different types of stipules observed within this series are shown.