Notes on Pluteus (Pluteaceae, Agaricales) from Brazil including two new species and a new record

Abstract

Two new species of Pluteus, P. densifibrillosus and P. puttemansii, are described and illustrated from specimens collected in two remnants of the Atlantic forest in the city of São Paulo, SP, Brazil. Pluteus densifibrillosus is characterized by a densely fibrillose pileus with spinulose fibrils at the center and almost globose basidiospores. Pluteus puttemansii has a stipe with a grayish brown subbulbous-marginate base and a strigose basal mycelium. Pluteus densifibrillosus belongs to section Hispidoderma and P. puttemansii to section Pluteus. Pluteus longistriatus and P. umbrinoalbidus, which were collected in the same area, also are described and illustrated. Pluteus longistriatus represents a new record for Brazil.

• Atlantic rainforest
• Basidiomycota
• diversity
• taxonomy

The authors thank Dr Andrew M. Minnis, Systematic Mycology & Microbiology Laboratory (USDA–ARS), for his advices in this study; Dr Tarciso S. Filgueiras, Reserva Biológica do IBGE, and Francisco Kuhar, FCEN Universidad de Buenos Aires, who kindly revised the Latin diagnoses; the curator of NY for the loan of collections; Fernanda Karstedt, Instituto de Botânica, for taking photographs and collecting some specimens; Klei R. Sousa for preparing the ink drawings; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the support and grant to the first author; and the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP grant 04/04319-2) for financial support.