The Entolomataceae of the Pakaraima mountains of Guyana I: four new species of Entoloma s. str.

This paper constitutes the first documented accounts of Entolomataceae taxa (Agaricales, Basidiomycota) from Guyana. Entoloma olivaceocoloratum, Entoloma rugosostriatum, Entoloma fragilum and Entoloma illinita are described as new species from the Pakaraima Mountains, occurring in rainforests dominated by ectomycorrhizal Dicymbe and Aldina spp. Macromorphological, micromorphological and habitat data are provided for the new species.