Studies in the Basidiodendron caesiocinereum complex (Auriculariales, Basidiomycota)

• Published in: Mycological progress Vol. 20; no. 10; pp. 1275 - 1296
• Main Authors: Spirin, Viacheslav, Malysheva, Vera, Schoutteten, Nathan, Viner, Ilya, Miettinen, Otto, Nordén, Jenni, Ryvarden, Leif, Kotiranta, Heikki, Verbeken, Annemieke, Weiß, Michael, Larsson, Karl-Henrik
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2021; Springer Nature B.V
• Subjects: Africa; Auriculariales; Basidiospores; Biomedical and Life Sciences; Character recognition; Ecology; Eurasia; Life Sciences; Microbiology; Morphology; New species; North America; Original Article; Pacific Ocean Islands; Plant Sciences; Taxonomic revision; Taxonomy; Pacific Ocean Islands; Eurasia; North America; Africa; Heterobasidiomycetes; Basidiospores; Phylogeny; Taxonomy
• ISSN: 1617-416X; 1861-8952
• DOI: 10.1007/s11557-021-01724-6

Taxonomy of Basidiodendron caesiocinereum complex is revised based on morphological and molecular methods (with the use of nc LSU rDNA, ITS and TEF1 regions). The basidiospore ornamentation is justified as a key morphological character for the species recognition in the group. As redefined here, B. caesiocinereum is an angiosperm-dwelling species with smooth basidiospores. Bourdotia cinerella and B. cinerella var. trachyspora are proved to represent separate species with warted basidiospores; they are reintroduced as Basidiodendron cinerellum and B. trachysporum . Additionally, eight new species related to B. caesiocinereum are described based on material from Eurasia, North America and Africa, and identity of B. spinosum from Oceania is discussed.