Abstract
In this study, phylogenetic analysis of Fibroporia and its related genera was carried out based on multiple loci of ITS, nLSU, nSSU, mtSSU, tef1 and rpb2. Combined with the morphological characters, a new genus, Pseudofibroporia gen. nov., is established. Phylogenetically, Pseudofibroporia is closely related to Fibroporia, but morphologically, the former is different from the latter in its distinct pileate basidiomata with entire margin and lacking rhizomorphs. In addition, three new species, Fibroporia bambusae sp. nov., F. ceracea sp. nov. and Pseudofibroporia citrinella sp. nov., are described from China. Fibroporia bambusae is different from other species by its cream to pinkish buff pore surface, cinnamon buff rhizomorphs and a dimitic hyphal system with both clamped and simple-septate generative hyphae. F. ceracea is distinguished by its ceraceous pore surface and a monomitic hyphal system with clamped generative hyphae. Pseudofibroporia citrinella is characterized by white to lemon yellow pileal surface, lemon yellow to curry buff pores, a dimitic hyphal system with clamped generative hyphae and oblong to broadly ellipsoid, and slightly thick-walled basidiospores (4–4.5 × 2.2–2.8 μm). Illustrated descriptions of the novel species and a key to known species of Fibroporia from China are provided.
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