Entoloma cyanulum
Local name: Bläulicher Zwerg-Zärtling
Bläulicher Zwerg-Zärtling (Entoloma cyanulum) is a small, distinctive mushroom characterized by its bluish cap coloration and delicate stature. This saprophytic fungus plays an important ecological role in nutrient cycling by decomposing organic matter in forest ecosystems.
Photo: iNaturalist: (c) Rodrigo Dittborn, some rights reserved (CC BY-NC), uploaded by Rodrigo Dittborn
Taxonomy & Classification
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Entolomataceae
Genus
Entoloma
Entoloma cyanulum belongs to the family Entolomataceae, order Agaricales, within the Agaricomycetes class.
Species Profile
Bläulicher Zwerg-Zärtling (Entoloma cyanulum) is a small, distinctive mushroom characterized by its bluish cap coloration and delicate stature. This saprophytic fungus plays an important ecological role in nutrient cycling by decomposing organic matter in forest ecosystems. Its small size and subtle blue hues make it easily overlooked among forest floor debris.
Bläulicher Zwerg-Zärtling (Entoloma cyanulum) is declining primarily due to habitat loss and degradation of its specialized grassland ecosystems. Agricultural intensification, urban development, and changes in traditional land management practices have significantly reduced the availability of suitable habitat for this rare fungal species.
Key Facts
Habitat & Distribution
Entoloma cyanulum typically occurs in deciduous and mixed forests, particularly favoring areas with rich leaf litter and well-developed humus layers. The species shows preference for shaded, humid microsites often associated with decaying wood and organic debris on the forest floor.
Threats
IUCN Red List: Endangered
Bläulicher Zwerg-Zärtling (Entoloma cyanulum) is declining primarily due to habitat loss and degradation of its specialized grassland ecosystems. Agricultural intensification, urban development, and changes in traditional land management practices have significantly reduced the availability of suitable habitat for this rare fungal species.
Habitat loss from agricultural intensification
Urban development and land conversion
Changes in traditional grassland management
Climate change affecting soil conditions
Nitrogen deposition and eutrophication
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). Entoloma cyanulum (Entoloma cyanulum). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/blaulicher-zwerg-zartling