Crazed Cap
Dermoloma cuneifolium
Dermoloma cuneifolium is a species of fungus in the family Tricholomataceae, and the type species of the genus Dermoloma. Originally named Agaricus cuneifolius by Elias Magnus Fries in 1818, it was transferred to Dermoloma by Marcel Bon in 1986.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Dermoloma_cuneifolium
Taxonomy & Classification
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Tricholomataceae
Genus
Dermoloma
Crazed Cap belongs to the family Tricholomataceae, order Agaricales, within the Agaricomycetes class.
Species Profile
Dermoloma cuneifolium is a species of fungus in the family Tricholomataceae, and the type species of the genus Dermoloma. Originally named Agaricus cuneifolius by Elias Magnus Fries in 1818, it was transferred to Dermoloma by Marcel Bon in 1986.
Dermoloma cuneifolium faces significant threats from habitat degradation and loss of old-growth forest ecosystems where it depends on specific soil conditions and mycorrhizal relationships. Climate change and altered precipitation patterns are disrupting the delicate moisture balance required for fruiting body development and spore dispersal. The species' limited distribution and specialized ecological requirements make it particularly vulnerable to environmental changes.
Key Facts
Habitat & Distribution
Inhabits mature coniferous and mixed forests, particularly in areas with well-developed organic soil layers and stable moisture conditions. Typically found in association with specific tree species where it forms mycorrhizal relationships, often in undisturbed forest floor environments with rich humus layers.
Threats
Old-growth forest loss and fragmentation
Soil compaction and disturbance from logging activities
Climate change altering moisture regimes
Disruption of mycorrhizal host relationships
Air pollution affecting soil chemistry
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Crazed Cap (Dermoloma cuneifolium). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/crazed-cap