AUTHOR=Zhou Meng , Ji Xiao-Hong , Liu Hong-Gao , Miller Kurt , Yuan Yuan , Vlasák Josef 

TITLE=Two new species of Hymenochaetaceae from tropical Asia and America

JOURNAL=Frontiers in Cellular and Infection Microbiology

VOLUME=12

YEAR=2023

URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2022.1100044

DOI=10.3389/fcimb.2022.1100044

ISSN=2235-2988

ABSTRACT=<p>Two new species in Hymenochaetaceae, <italic>Fulvifomes acaciae</italic> and <italic>Pyrrhoderma nigra</italic>, are illustrated and described from tropical Asia and America based on morphology and phylogenetic analyses. <italic>F. acaciae</italic> is characterized by perennial, pileate, and woody hard basidiomata when fresh; ash gray to dark gray, encrusted, concentrically sulcate, and irregularly cracked pileal surface; circular pores of 7–8 per mm with entire dissepiments; a dimitic hyphal system in trama and context; absence of setal element and presence of cystidioles; and broadly ellipsoid, yellowish brown, thick-walled, and smooth basidiospores measuring 5–6 μm × 4–5 μm. <italic>P. nigra</italic> is characterized by perennial and resupinate basidiomata with dark gray to almost black pore surface when fresh; small and circular pores of 7–9 per mm, a monomitic hyphal system with generative hyphae simple septate, hyphoid setae dominant in subiculum but not in tube trama, and absence of cystidia; and ellipsoid, hyaline, thin-walled basidiospores measuring 4–5 μm × 3–3.6 μm. The differences between the new species and morphologically similar and phylogenetically related species are discussed. Keys to <italic>Fulvifomes</italic> and <italic>Pyrrhoderma</italic> have also been provided.</p>