During preparations for a revision of the genus Ribes L. for the entire neotropical region, three taxa in Ecuador, Colombia, and Costa Rica were recognized as new and undescribed species. These are formally named here. Ribes costaricensis sp. nov. from Costa Rica has been traditionally misidentified as R. leptostachyum Benth., from which it differs in angular (not round) ovaries and glabrous (not setose) stems. Ribes luteynii sp. nov. has been confused with R. hirtum Willd. in the past, from which it differs in leaf size and outline and details of the indument. Ribes caldasiensis sp. nov., from Colombia, is also a segregate of the widespread R. hirtum and differs in having a flaring hypanthium (vs. cylindrical) and lax (vs. dense racemes) and also in details of the indument. All three species are endemic to narrow regions from which their respective closest relatives are absent.

Communicating Editor: Thomas G. Lammers