Abstract
Gloeoporus guerreroanus sp. nov. is described and illustrated from specimens collected on bamboo in Rio Grande do Sul State, southern Brazil. The new taxon presents hymenium continuum along the tubular internal surface and dissepiments and represents an addition into the relatively small, poroidmerulioid genus Gloeoporus.
The authors thank Drs Kurt Hjortstam and L. Ryvarden for critically reviewing the manuscript. We also thank Dr Vitalino Cesca for the linguistic improvements on Latin diagnosis. GC is supported by PICDT-CAPES. MR is member of the National Research Council of Argentina (CONICET).