Revisiting Hebeloma (Hymenogastraceae, Agaricales) in Japan: four species recombined into other genera but three new species discovered

Abstract

Here, we present the results of studies of Japanese Hebeloma collections. The four species described by Imai as Hebeloma (H. fimicola, H. helvolescens, H. humosum, and H. tomoeae) are not from the genus Hebeloma, but are members of Agrocybe, Homophron, or Pholiota. Recombinations are made. Hebelomacrustuliniforme f. microspermum, described by Hongo, is a synonym of H. nanum. Three species of Hebeloma are described as new to science, all currently known only from Japan. Two of these species, H. asperosporum and H. cinnamomeum, are members of H. sect. Denudata while the third species H. citrisporum belongs to H. sect. Velutipes. Japanese records of H. cavipes, H. eburneum, H. hygrophilum, H. subtortum, and H. velutipes are validated. In total, fifteen species of Hebeloma are confirmed from Japan; this is compared with previous checklists.

Not (only) poison pies – Hebeloma (Agaricales, Hymenogastraceae) in Mexico

“…Newly generated sequences were accessioned to Gen-Bank (ON167764-ON167898, ON168958-ON168966, ON202494-ON202614 and ON237944-ON237985), Suppl. material 1: Table S1 summarizes all sequences used in the analyses, including those previously published in the context of a number of publications (Eberhardt et al 2009(Eberhardt et al , 2013(Eberhardt et al , 2015(Eberhardt et al , 2016a(Eberhardt et al , 2016b(Eberhardt et al , 2021a(Eberhardt et al , 2022a(Eberhardt et al , 2022bEberhardt and Beker 2010;Beker et al 2010Beker et al , 2013Beker et al , 2016Schoch et al 2012;Cripps et al 2019).…”

“…Sequences of types were included if available unless missing data (short sequences) had an adverse effect on the taxonomic resolution of the result. The selection of loci, additional species and taxa used for rooting was guided by previous results (Beker et al 2016;Cripps et al 2019;Eberhardt et al 2021aEberhardt et al , 2021bEberhardt et al , 2022aEberhardt et al , 2022b -and by the loci that could be generated from the collections available. Prior to concatenation, single locus trees (see Suppl.…”

“…Although this monograph only addressed the genus within Europe, it has provided a base both morphologically and molecularly. Since the publication of that monograph, a number of papers have been published describing new species of Hebeloma as well as resurrecting long forgotten names that can now be confirmed as valid (e.g., Cripps et al 2019;Eberhardt et al 2020aEberhardt et al , 2020bEberhardt et al , 2021aEberhardt et al , 2021bEberhardt et al , 2022aEberhardt et al , 2022bMonedero and Alvarado 2020).…”

Species determination using AI machine-learning algorithms: Hebeloma as a case study

“…The remaining five have been synonymised in later work– H. fragilipes is replaced by H. album , H. dunense is replaced by H. velatum, both H. oreophilum and H. clavulipes are replaced by H. palustre (all Eberhardt et al 2022a ) and H. hygrophilum is replaced by H. paludicola (Eberhardt et al in prep). Thirty-one further species have been published as new or confirmed recently from Europe and other continents (Monedero and Alvarado 2020 ; Grilli et al 2020 ; Eberhardt et al 2020a , 2020b , Eberhardt et al, 2021a , 2021b , 2022a , 2022b ). The remaining nine species, from Mexico and the United States, will be discussed in two forthcoming papers (Eberhardt et al in press, in prep.).…”

Demystifying Hebeloma: introducing hebeloma.org and its database

“…Alongside phylogenetic analysis, this database has been a key analytic tool that has enabled us to begin to understand a genus that has hitherto been described as ‘difficult’. In a series of publications, initially focusing on European species (Eberhardt et al 2013 , 2015 , 2016a , b ; Beker et al 2016 ; Grilli et al 2016 , 2020 ), and more recently from around the world (Cripps et al 2019 ; Eberhardt et al 2020a , b , 2021a , b , 2022a , b ), species delimitation has been explored, both morphologically and molecularly.…”