Ganoderma curtisii was originally described from the south-eastern United States.
Subsequently, controversy has arisen since it began to be evident that there
was not a single species but a complex. In the present study, 124 collections of
the complex from four different regions of Mexico were analysed from
morphological, ecological, and molecular phylogenetic perspectives. Recently
collected specimens, cultures, and herbarium specimens, including types, were
studied. A total of five terminal clades were recovered within the complex,
including G. curtisii s.s., G. ravanelii, G. linghzi, G. pulverulentum, and a strongly supported clade for
which no mane could be found and therefore proposed here as
Ganoderma mexicurtisii sp. nov., a new member of this complex, until now only
known from Mexico.