A Species of Polyporus (Basidiomycota) New to China

One rare polypore, Polyporus pseudobetulinus (Murashk ex Pilt) Thorn, Kotir. Niemel, was found on living aspen from Changbaishan Nature Reserve, Jilin Province, northeastern China, and is newly recorded from China. An illustrated description of the species is given based on the material collected from China.