Phylloporia yuchengii sp nov (Hymenochaetales, Basidiomycota) from Western Tien Shan Mountains of Uzbekistan based on phylogeny and morphology

Phylloporia yuchengii is newly described and illustrated from alpine ecosystem, Western Tien Shan Mountains in the Tashkent Province of Uzbekistan. This species is distinguished from other Phylloporia species in a combination of hard corky consistency of basidiocarps with thick base (up to 3.5 cm) and azonate pileal surface, pores as 6-8 per mm, a monomitic hyphal system with regularly arranged, interwoven and subparallel generative hyphae, respectively, in context, tomentum and trama, and ellipsoid to oblong-ellipsoid and cyanophilous basidiospores (3.2-4 x 2.3-3 mu m). In nLSU-based phylogeny, P. yuchengii nested within the Phylloporia clade and formed a distinct lineage with strong supports. The morphological differences between P. yuchengii and other related Phylloporia species in morphology and geography are discussed.