A new species, two new combinations and notes on Fomitopsidaceae (Agaricomycetes, Polyporales)

Rhodofomitopsis roseomagna sp. nov. is described as a new species from the Brazilian Atlantic forest based on morphological and molecular analyses. The species is characterized by the brownish to lilac, pileate basidiomata, round pores (5-6 per mm), and cylindrical to subcylindrical basidiospores (4-5 x 2.0-2.5 mu m). Phylogenetic analyses based on combined ITS and nLSU rDNA sequences show that the new species belongs to the recently described genus Rhodofomitopsis. We also propose Rhodofomitopsis flabellata and Fomitopsis bondartsevae as new combinations. Notes on some tropical species of Fomitopsidaceae, description and illustration of the new species, and a key to the species of Rhodofomitopsis reported from the Neotropics are provided.