Abstract
In this study, 18 taxa of Machaerium are confirmed for Mato Grosso and Mato Grosso do Sul. Amongst the 15 taxa occurring in Mato Grosso, six were cited for the first time in the State: M. biovulatum, M. floribundum var. floribundum, M. macrophyllum var. macrophyllum, M. paraguariense, M. quinatum var. parviflorum, and M. quinatum var. quinatum. Amongst the nine species confirmed for Mato Grosso do Sul, M. eriocarpum and M. isadelphum are new records for the State. The genus is widely distributed in the States and is represented in various vegetational formations. Analytical key, descriptions, and information on the phenology and preferential environments of each taxon are presented, besides illustrations for certain taxa.
Key words:
Center-West Brazil; Fabaceae; floristics; Jacarandá; taxonomy