Cortinarius gracilior
Local name: Dünnstieliger Schleierling
Dünnstieliger Schleierling (Cortinarius gracilior) is a slender-stemmed mushroom species characterized by its delicate stature and distinctive cortina (web-like veil) that connects the cap to the stem in young specimens. This mycorrhizal fungus forms essential symbiotic relationships with tree roots, facilitating nutrient exchange and supporting forest ecosystem health through its underground hyphal networks.
Photo: iNaturalist: (c) Daniel Ghyselinck, some rights reserved (CC BY), uploaded by Daniel Ghyselinck
Taxonomy & Classification
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Cortinariaceae
Genus
Cortinarius
Cortinarius gracilior belongs to the family Cortinariaceae, order Agaricales, within the Agaricomycetes class.
Species Profile
Dünnstieliger Schleierling (Cortinarius gracilior) is a slender-stemmed mushroom species characterized by its delicate stature and distinctive cortina (web-like veil) that connects the cap to the stem in young specimens. This mycorrhizal fungus forms essential symbiotic relationships with tree roots, facilitating nutrient exchange and supporting forest ecosystem health through its underground hyphal networks.
Dünnstieliger Schleierling (Cortinarius gracilior) is declining primarily due to habitat loss and degradation of its specialized forest ecosystems. The species is particularly vulnerable to changes in soil chemistry and mycorrhizal host tree availability, which are being disrupted by intensive forestry practices and environmental pollution.
Key Facts
Habitat & Distribution
Cortinarius gracilior inhabits mature coniferous and mixed forests, particularly favoring areas with well-established spruce, fir, or pine trees where it can form mycorrhizal associations. The species typically occurs in undisturbed forest soils with rich organic matter and stable moisture conditions, often in montane or boreal forest environments.
Threats
IUCN Red List: Endangered
Dünnstieliger Schleierling (Cortinarius gracilior) is declining primarily due to habitat loss and degradation of its specialized forest ecosystems. The species is particularly vulnerable to changes in soil chemistry and mycorrhizal host tree availability, which are being disrupted by intensive forestry practices and environmental pollution.
Habitat loss from deforestation and forest conversion
Intensive forestry practices disrupting mycorrhizal networks
Climate change altering forest composition
Loss of specific host tree species
Soil acidification and chemical pollution
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). Cortinarius gracilior (Cortinarius gracilior). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/dunnstieliger-schleierling