A geographical extension of the North American genus Bothia (Boletaceae, Boletales) to East Asia with a new species B. fujianensis from China

Bothia fujianensis is described as a new species from Fujian Province, a subtropical region of China. It is morphologically characterized by its brown to pale reddish brown basidiomata, pale brown hymenophore, adnate to slightly decurrent, with subreticulations to ridges at the apex of the stipe, relatively longer pleurocystidia, and clavate, subclavate or ventricose cheilocystidia. Molecular phylogenetic analyses using the large subunit nuclear ribosomal RNA loci, DNA nucleotide sequences of the internal transcribed spacer region, and the translation elongation factor 1 alpha also confirmed that B. fujianensis is distinct from B. castanella. The discovery of B. fujianensis in China indicates that Bothia has a much wider geographical distribution range occurring in East Asia and in North America.