AUTHOR=Zhou Hong-Min , Bau Tolgor , Si Jing 

TITLE=Morphological and phylogenetic evidence reveal three new Pseudohydnum (Auriculariales, Basidiomycota) species from North China

JOURNAL=Frontiers in Cellular and Infection Microbiology

VOLUME=13

YEAR=2023

URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2023.1139449

DOI=10.3389/fcimb.2023.1139449

ISSN=2235-2988

ABSTRACT=<p><italic>Pseudohydnum</italic> is characterized by gelatinous basidiomata with hydnoid hymenophores and longitudinally septate basidia. In this study, samples of the genus from North China were examined morphologically and phylogenetically using a dataset of the internal transcribed spacer of the ribosomal RNA gene and the nuclear large subunit rDNA. This study describes three new species, namely <italic>Pseudohydnum abietinum</italic>, <italic>Pseudohydnum candidissimum</italic>, and <italic>Pseudohydnum sinobisporum</italic>. <italic>Pseudohydnum abietinum</italic> is characterized by pileate and pale clay pink basidiomata when fresh, with a rudimentary stipe base, four-celled basidia, and broadly ellipsoid to ovoid or subglobose basidiospores (6−7.5 × 5−6.3 μm). <italic>P. candidissimum</italic> is characterized by very white basidiomata when fresh, frequently four-celled basidia, and broadly ellipsoid to subglobose basidiospores (7.2−8.5 × 6−7 μm). <italic>P. sinobisporum</italic> is characterized by ivory basidiomata when fresh, two-celled basidia, ovoid to broadly ellipsoid, or subglobose basidiospores (7.5−9.5 × 5.8−7.2 μm). The main characteristics, type localities, and hosts of <italic>Pseudohydnum</italic> species are listed.</p>