The Entolomataceae of the Pakaraima Mountains of Guyana III: new species of Rhodocybe

Abstract

Rhodocybe pruinosostipitata, found on woody debris, and R. spongiosa, found on soil litter, are described as new species from tropical rainforests of the Pakaraima Mountains of Guyana. Both species possess pustulate basidiospores and pseudocystidia. Rhodocybe pruinosostipitata is classified in section Rhodocybe based on its centrally attached stipe, pleurocystidia as pseudocystidia with brightly colored contents, and lack of clamp connections. Rhodocybe spongiosa is classified in section Crepidotoides based on its pleurotoid stature and hymenial pseudocystidia. Macromorphological, micromorphological, and habitat data are provided for the new species.