Polyporus dictyopus , with a large number of heterotypic synonyms, has been traditionally considered a species complex, characterized by wide morphological variation and geographic distribution. Thus, neotropical specimens previously identified as P. Two unrelated generic lineages, each one represented by different species, are reported: Atroporus is recovered and re-circumscribed to include A. Our study showed that at least five distinct species were hidden under the name P.
Detailed descriptions, pictures, illustrations, and a key are provided for Atroporus and Neodictyopus species. Micheli ex Adans has been traditionally characterized by its stipitate basidiomata, poroid hymenophore, dimitic hyphal system with skeletal-binding hyphae, and cylindrical to ellipsoid basidiospores. In this wide sense, it has been considered with a wide global distribution and encompassing other names as congeneric synonyms [ 1 β 6 ].
Recent phylogenetic analyses revealed that these Polyporus morphological groups do not comprise entirely independent monophyletic lineages [ 7 ]. Additionally, Polyporus has been considered polyphyletic [ 7 β 11 ]. However, several species close to Polyporus melanopus Pers. This clade has received a taxonomical approach and has been recently accommodated as Picipes Zmitr. These studies also showed that several other taxa, such as Polyporus leprieurii Mont.
Polyporus guianensis and P. Polyporus dictyopus was originally described based on a collection from the Juan Fernandez archipelago, near the coast of Chile, and considered as a species complex, based on morphology and mating type data [ 1 , 6 ]. The current concept of P.
Two of those heterotypic synonyms, Polyporus diabolicus Berk. Later, Atroporus cystidia were reinterpreted as modified binding hyphae [ 17 ], and the synonymization of Atroporus in Polyporus was proposed, making P. This criterium was assumed in later studies [ 2 , 6 , 15 , 18 , 19 ]. The morphological heterogeneity and the global distribution of P. In our study, we aim to performed a detailed morphological and molecular analyses of the specimens previously identified as P.
