Studies in the Truncospora ohiensis - T-ochroleuca group (Polyporales, Basidiomycota)

Based on both morphological and phylogenetic analyses, 7 species are recognized in the Trtincospora ohiensis group and 6 of them are described as new. T. ohiensis s.str. occurs in the American North-East; its closest relatives are T. arizonica, the long-spored species from the SouthWest USA, and T. ornata from East Asia. T. atlantica is another long-spored member of the group, distributed in Macaronesia and the Iberian Peninsula. The dwarf-sized and pale-coloured T. mexicana is described from the western coast of the Gulf of Mexico, and its look-alikes, T. floridana and T tropicalis, are from the Caribbean. The identification key for the T. ohiensis-ochroletica group is provided.