Abstract
Eugenia is an important genus of Brazilian Myrtaceae due to its representativity, ecological and economic aspects. During a study on the taxonomy of Eugenia for the “Flora Fanerogâmica do Estado de São Paulo” project, some names in need of nomenclatural and taxonomic changes were identified. A new name, and six new synonyms are herein presented, as well as the designation of ten lectotypes, two epitypes, one neotype, and the elucidation of a not validly published name, including a discussion of each case.