Taxonomy and an Updated Phylogeny of Anomoloma (Amylocorticiales, Basidiomycota)

Abstract

© 2022 by the authors. Licensee MDPI, Basel, Switzerland.Anomoloma is a cosmopolitan poroid wood-decaying genus, belonging to the Amylocor-ticiales. During a study on polypores, two new species of Anomoloma were found in Eurasia, and they are described as A. denticulatum and A. eurasiaticum. To examine the phylogenetic relationships among species of Anomoloma, we analyzed nuclear ribosomal sequence data from the ITS regions and the LSU gene. The result demonstrates that A. denticulatum and A. eurasiaticum are independent species that belong to the Anomoloma genus. Both new species share the principal characteristics of the genus, but Anomoloma denticulatum is characterized by extensive white rhizomorphs spreading under the whole fruiting body, angular pores measuring 1–2 per mm, distinctly lacerate to dentate dissepiments and basidiospores of 3.5–4.3 × 2–2.5 µm. Anomoloma eurasiaticum is characterized by bearing plenty of large crystals on the mycelia and growth on Picea in high altitude areas. A key to the accepted species of Anomoloma worldwide is provided.