A first list of ectomycorrhizal and putative ectomycorrhizal fungi from southern Brazil (the states of
Rio Grande do Sul, Santa Catarina and Paraná), their potential hosts and origin is presented. The list
is based on literature and authors observations. Ectomycorrhizal status and putative origin of listed
species was assessed based on worldwide published data and, for some genera, deduced from
taxonomic position of otherwise locally distributed species. A total of 144 species (including 18
doubtfull species) in 49 genera were recorded for this region, all accompanied with a brief
distribution, habitat and substrate data. At least 30 collections were published only to the genus
level and require further taxonomic review
