Competing sexual-asexual generic names in Agaricomycotina (Basidiomycota) with recommendations for use

Abstract

With the change to one scientific name for fungal taxa, generic names typified by species with sexual or asexual morph types are being evaluated to determine which names represent the same genus and thus compete for use. In this paper generic names of the Agaricomycotina (Basidiomycota) were evaluated to determine synonymy based on their type. Forty-seven sets of sexually and asexually typified names were determined to be congeneric and recommendations are made for which generic name to use. In most cases the principle of priority is followed. However, 16 generic names are recommended for use that do not have priority and thus need to be protected: Aleurocystis over Matula; Armillaria over Acurtis and Rhizomorpha; Asterophora over Ugola; Botryobasidium over Acladium, Allescheriella, Alysidium, Haplotrichum, Physospora, and Sporocephalium; Coprinellus over Ozonium; Coprinopsis over Rhacophyllus; Dendrocollybia over Sclerostilbum and Tilachlidiopsis; Diacanthodes over Bornetina; Echinoporia over Echinodia; Neolentinus over Digitellus; Postia over Ptychogaster; Riopa over Sporotrichum; Scytinostroma over Artocreas, Michenera, and Stereofomes; Tulasnella over Hormomyces; Typhula over Sclerotium; and Wolfiporia over Gemmularia and Pachyma. Nine species names are proposed for protection: Botryobasidium aureum, B. conspersum, B. croceum, B. simile, Pellicularia lembosporum (syn. B. lembosporum), Phanerochaete chrysosporium, Polyporus metamorphosus (syn. Riopa metamorphosa), Polyporus mylittae (syn. Laccocephalum mylittae), and Polyporus ptychogaster (syn. Postia ptychogaster). Two families are proposed for protection: Psathyrellaceae and Typhulaceae. Three new species names and 30 new combinations are established, and one lectotype is designated.

Species diversity and taxonomy of Scytinostroma sensu stricto (Russulales, Basidiomycota) with descriptions of four new species from China

“…Since a sequence of S. portentosum (type species, described from Pennsylvania) from Canada was distinct from the strongly supported sister lineage comprised of sequences of S. portentosum and S. hemidichophyticum from Europe, we suppose that all the European sequences represent S. hemidichophyticum and S. portentosum is restricted in distribution to North America. The two species, S. artocreas and S. incrustatum transferred from Michenera by Stalpers et al (2021) based on morphological evidence, were nested within the Scytinostroma s.s. Scytinostroma duriusculum is a cosmopolitan species and has been reported from many countries in subtropical and tropical areas ( Boidin and Lanquetin 1987 ; Bernicchia and Gorjón 2010 ). However, our phylogenetic analyses demonstrated that it could be a species complex, because three lineages were recognized from the samples of France, Sri Lanka, and China, Thailand and Vietnam.…”

“…& M.A. Curtis) Donk, is characterized by resupinate, effused basidiomes with a smooth to tuberculate hymenophore, a dimitic hyphal system with dextrinoid and cyanophilous skeletal hyphae, presence of gloeocystidia in most species, and subglobose to ellipsoid, variably amyloid or inamyloid, smooth basidiospores ( Bernicchia and Gorjón 2010 ; Liu et al 2018 ; Stalpers et al 2021 ). It is a widely distributed genus with 42 species level names in Index Fungorum ( http://www.indexfungorum.org , accessed on 1 January 2023).…”

“…The two genera are similar in some aspects, such as the texture of basidiome, a dimitic hyphal system, presence of gloeocystidia, but species of Michenera have larger basidia and larger, inamyloid, thick-walled basidiospores. Based on morphology, Stalpers et al (2021) transferred the two species of Michenera to Scytinostroma and treated the former genus as a synonym of the latter.…”

Nomenclature of the Beeswax bracket (Ganoderma pfeifferi), a European wood decay fungus with medicinal properties

“…Based on the recent taxonomic results (Wu et al 2020), the continuous use of the names Wolfiporia cocos and especially Poria cocos for the "Fuling" mushroom may cause uncertainty in scientific works and comparing its results. Therefore, in the present work, we recommend the acceptance and use of the taxonomically and nomenclaturally correct names Pachyma hoelen or Wolfiporia hoelen (Stalpers et al 2021). Furthermore, in the case of the applied research, we consider it expedient to identify the examined samples based on barcoding sequences and to compare them with the reference sequences of W. hoelen published by Wu et al (2020).…”

Two new species of Exidia sensu lato (Auriculariales, Basidiomycota) based on morphology and DNA sequences

“…et al, have waxy, very small, and effused basidiomata different from the usually gelatinous, thick, orbicular basidiomata of Exidia , were recently transferred into Myxarium based on morphological and phylogenetic analyses (Spirin et al, 2018 ). Myxarium phylogenetically forms a monophyletic clade distantly related to Exidia and Tremellochaete (Spirin et al, 2019a ; Stalpers et al, 2021 ). In addition, Myxarium belongs to Hyaloriaceae, whereas Exidia and Tremellochaete belong to Auriculariaceae, and Myxarium can be distinguished from the latter two genera by its distinctly stalked basidia (Spirin et al, 2018 , 2019a ).…”