<b>Integrating multi</b><b>-</b><b>marker phylogeny and morphology reveals hidden diversity and morphological plasticity in the genus</b><b> </b><b><i>Pseudohydnum</i></b><b><i> </i></b><b>(Auriculariales,</b><b> </b><b>Basidiomycota) from China</b>

However, many Chinese collections remain taxonomically unresolved and species boundaries are poorly defined. Here, we reassess the species diversity of Chinese Pseudohydnum through an integrative approach combining detailed morphology with multi-marker phylogenetics (ITS, nrLSU, and rpb1).

We formally describe three new species, <i>P. </i><i>ellipsosporum</i>, <i>P. macroumbrosum</i>, and <i>P. roseolostipitatum</i>. We also refinethe circumscriptions of four previously described taxaand provide new insights into their intraspecific variation, geographic distribution, and ecology. Notably, we document a previously unknown host association: <i>P. brunneicep</i><i>s</i> was consistently found on decayed bamboo (<i>Phyllostachys edulis</i>), a substrate never before recorded for any Pseudohydnum species.