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Nomenclatural review of names published in the fungal genus Dermoloma (Basidiomycota, Agaricales, Tricholomataceae) based on morphological analyses of type specimens

Summary

This study examines nine type specimens of mushrooms in the genus Dermoloma, which are small fungi found in grasslands and forests. Researchers used microscopic analysis to describe detailed features of these specimens and determine which ones truly belong to the Dermoloma genus. The study found that three species previously classified as Dermoloma actually belong to different genera, while clarifying the identity of other species that had not been formally recorded in recent years.

Background

The genus Dermoloma comprises agaric fungi with small to medium-sized basidiomata characterized by grey and brownish coloration, emarginate lamellae, and a distinct farinaceous odor. Most Dermoloma members have been described based on morphology without molecular support, and sequencing of type specimens has been largely unsuccessful due to degraded DNA.

Objective

To re-describe nine Dermoloma type specimens using standardized morphological analyses including previously undocumented microscopic structures, and to clarify the taxonomic identity and nomenclatural status of these taxa for future nomenclatural treatments within the genus.

Results

Nine Dermoloma types were re-described with detailed micromorphological data. Three taxa (D. hybridum, D. inconspicuum, D. intermedium var. coniferarum) were excluded from Dermoloma due to atypical pileipellis structures. D. atrobrunneum and D. hymenocephalum were confirmed as distinct taxa, while D. longibasidiatum and D. pseudocuneifolium are likely synonyms of other species. D. pragense represents a distinct but recently unrecorded European species.

Conclusion

This nomenclatural revision provides essential standardized morphological data for stabilizing Dermoloma species concepts and is crucial for efficient use of older names. The study clarifies taxonomic boundaries within the genus and supports future phylogenetic studies, though some conclusions have limitations due to degraded material and subtle morphological differences among species.
  • Published in:Biodiversity Data Journal,
  • Study Type:Taxonomic Review,
  • Source: PMID: 40718846, DOI: 10.3897/BDJ.13.e158080
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