Abstract
Five new combinations are made for taxa formerly described or assigned to the genus Oncidium, but currently placed in Gomesa. These all predate formerly widely known and accepted names: Gomesa bicornuta, comb. nov. for Gomesa cruciata; Gomesa florida f. florida, comb. nov. for Gomesa longicornu; Gomesa maculosa f. maculosa, comb. nov. for Gomesa spilotera; Gomesa maculosa f. aurea for Oncidium spilopterum [unranked] aureum; and Gomesa polyodonta, comb. nov. for Gomesa damacenoi. A new infraspecific taxon, Gomesa florida f. concolor, f. nov., is described for an unpublished but already known infraspecies. Two historical names described by J.M.C. Vellozo are herein resolved: Epidendrum floridum and Epidendrum gilvum, respectively as an accepted name for Gomosa longicornu and new synonym of Gomesa pubes. An historical, nomenclatural, and taxonomic review of all related names is presented, as well as 28 nomenclatural types are designated.