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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

Scientists have carefully re-examined nine fungal specimens from the genus Dermoloma that serve as the reference standards for naming these mushroom species. Using detailed microscopic analysis, they found that some specimens previously classified as Dermoloma actually belong to different genera, while others represent distinct species. This work helps clarify the true identity of Dermoloma mushrooms and provides a stable foundation for accurately naming new species discovered in the future.

Background

The genus Dermoloma consists of agaric fungi with small- to medium-sized basidiomata characterized by a pluristratous pileipellis and clamp connections. 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, to clarify their taxonomic classification and validate nomenclature within the genus.

Results

Nine Dermoloma types were re-described with detailed micromorphological data. Key findings include: D. hybridum, D. inconspicuum, and D. intermedium var. coniferarum do not belong to Dermoloma based on pileipellis structure; D. atrobrunneum and D. hymenocephalum are distinct taxa; D. cuneifolium var. punctipes appears synonymous with D. atrocinereum; D. longibasidiatum is likely a synonym of D. atrocinereum; D. pseudocuneifolium is a nomen dubium with inamyloid spores matching D. bellerianum; and D. pragense represents a distinct European species.

Conclusion

This nomenclatural review provides essential standardized morphological data for stabilizing Dermoloma species concepts and supporting future taxonomic treatments. The findings clarify the identity of older names and establish foundations for distinguishing Dermoloma from other genera within Tricholomataceae.
  • Published in:Biodiversity Data Journal,
  • Study Type:Nomenclatural Review,
  • Source: 10.3897/BDJ.13.e158080, PMID: 40718846
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