New species and newly recorded species of the family Strophariaceae (Agaricomycetes, Agaricales) in China

Two new species, <i>Pholiota songjiangensis</i> and <i>Pyrrhulomyces pileocystidiatus</i>, and one species newly recorded in China, <i>Agrocybe eduardii</i>, are described in this study. All of these species belong to the family Strophariaceae. <i>Pholiota songjiangensis</i> is characterized by a pallid pileus with appressed and concentric squamules, a white stipe covered with light yellowish-brown small scales, ellipsoid to ovoid basidiospores with an obvious germ pore, pleurocystidia as chrysocystidia, and cheilocystidia with two shapes: elongate-cylindrical with a capitulate apex and narrowly lageniform. <i>Pyrrhulomyces pileocystidiatus</i> is characterized by a bright orange-red to ochraceous brown pileus with an obtuse umbo, bitter taste, blackening basidiomata, pleurocystidia as chrysocystidia, and broadly clavate and orange-red pileocystidia. The specimens of <i>Agrocybe eduardii</i> collected from China in the present study closely matched the original morphological description of this species. These three species are described and illustrated, and phylogenetic analysis of a multigene dataset (ITS+nrLSU) is presented. Morphological and phylogenetic analyses confirmed that <i>Pholiota songjiangensis</i> and <i>Pyrrhulomyces pileocystidiatus</i> were distinctly different from other <i>Pholiota</i> and <i>Pyrrhulomyces</i> species, respectively. The Chinese samples formed a monophyletic group with the holotype of <i>Agrocybe eduardii</i>, confirming its newly recorded status from China when combined with the morphological evidence. Keys to species of <i>Pyrrhulomyces</i>, <i>Agrocybe</i> from China, and Pholiota subgenus Pholiota from China are provided.