Amauroderma calcitum sp. nov. and notes on taxonomy and distribution of Amauroderma species (Ganodermataceae)

Abstract

During a polypore survey in the Cerrado (Mato Grosso state, Brazil), Amauroderma specimens were collected and some ofthem deserved special taxonomic attention due to their intermediate morphology between A. calcigenum and A. partitum. Acomparative study of the types and reference material, as well as phylogenetic analysis, led us to conclude that these specimensrepresent an undescribed species, presented here as Amauroderma calcitum. In addition A. brasiliense is presented asa new record for the Brazilian Cerrado. Illustrations, taxonomic analyses and a discussion are presented for each taxon, anda key to the Amauroderma species from Brazil is provided. A phylogenetic discussion about the genus is also presented.