, Volume 58, Issue 1, pp 215-226

Borofutus, a new genus of Boletaceae from tropical Asia: phylogeny, morphology and taxonomy

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Abstract

A new monotypic genus in the Boletaceae, Borofutus, typified by B. dhakanus, is described using morphological and molecular evidence. This is a putatively ectomycorrhizal fungus associated with Shorea robusta. Borofutus is characterized by the combination of the following characters: basidiomata small to medium-sized; pileus grayish brown to cocoa brown; hymenophore subdecurrent, cream then golden brown, with broad, nearly hexagonal pores; basidiospores purple to purplish red in H2O, ornamented with irregular to regular shallow pits; cystidia lageniform, thick-walled. Borofutus is sister to Spongiforma in molecular phylogenetic analyses using DNA nucleotide sequences of single or multiple loci. A description, line drawings, phylogenetic placement and comparison with allied taxa are presented herein.