Abstract
In the tropics, the diversity of ectomycorrhizal milkcaps is predominantly represented by genus Lactifluus . In Brazil, species traditionally described as Lactarius need to be revised and recombined. Thus, seven milkcaps from Amazonia and Rio Grande do Sul, Brazil, published by Rick, Singer and co‐authors were reviewed. Lactarius amazonensis , L. brasiliensis , L. braunii , L. mamorensis and L. russula , along with the recently described L. rupestris , are combined in Lactifluus . In addition, Lactifluus annulifer together with Lf. braunii and Lf. russula , have lectotypes designated. A modern and detailed microscopic description, drawings and taxonomic discussion are provided for each species.