Fourteen species of Marasmius section Sicci from Parque Estadual das Fontes do Ipiranga (PEFI) are described, illustrated and commented. Identifications keys for the taxa of series Atrorubentes, Haematocephali and Leonini are also presented. The species M. aff. pseudoniveus and M. bellus are cited for the first time for PEFI; M. bambusiniformis and M. ferrugineus for the first time for São Paulo State and M. congregatus and M. musicola for the first time from Brazil.
Agaricales; Atlantic Rainforest; diversity; taxonomy
