Three new species and two new records of the genus Laccaria (Agaricales, Basidiomycota) from subtropical China based on morphological and multi-locus phylogenetic evidence

<i>Laccaria</i> is a large genus within the family Hydnangiaceae, and many potential species remain to be discovered in China. The present study describes three new species, <i>L. carminostipes</i>, <i>L. mangshanensis</i> and <i>L. sinolateritia</i>, and reports two new records, <i>L. japonica</i> and <i>L. versiforma</i>, which were originally discovered in Japan and Korea, respectively. These species were collected from subtropical mixed forests and identified based on morphological and phylogenetic evidence. Our phylogenetic analysis of the concatenated nucleotide sequences of ITS, LSU, <i>TEF1</i> and <i>RPB2</i> demonstrated that the three new species each formed a distinct clade, clearly separated from other known <i>Laccaria</i> species. A detailed description and illustrations of these species are also provided.