• Proposed
  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Amanita friabilis (P. Karst.) Bas

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Scientific name
Amanita friabilis
(P. Karst.) Bas
Common names
Fragile Amanita
muchotrávka jelšová
Alkšņu makstsēne
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Under Assessment
Proposed by
Pierre-Arthur Moreau
Susana C. Gonçalves
Michael Krikorev, Vladimír Kunca, Pierre-Arthur Moreau
Comments etc.
Martyn Ainsworth, Anders Dahlberg, Inita Daniele, Daniel Dvořák, Oliver Ellingham, Anna Kiyashko, Armin Mešić, Wim Ozinga, Irja Saar

Assessment Notes

Taxonomic notes

Why suggested for a Global Red List Assessment?

Ectomycorrhizal species strictly associated with Alnus spp. (A. glutinosa, A. incana, A. alnobetula), in riparian forests and swampy places, localities scattered and endangered by degradation of habitat (pollution by nitrogen, destruction of riparian forests…).

Geographic range

The species is reported from Europe and Russian Federation. In Europe, it is reported from several countries, mostly from the Boreal*, Central-European**, and Alpine*** domains. In the Russian Federation it has been found in western Siberia and the western Caucasus.

** South the Boreal zone, below Sweden and Norway
***Pyrenees, Alps, Carpathians, French Voges and Massif Central, and the Balkan mountains.

Population and Trends

By 2015, the number of known sites in Europe was estimated at about 100. In Asia, in the Russian Federation, it is apparently very rare (reported just once in Western Siberia) and protected by law in Krasnodar territory and Karachai-Cherkess Republic of Russia (western Caucasus; Kiyashko, personal communication).

The species is RedListed in Austria, Czech Republic, Estonia, Finland, France, Germany, Hungary, Norway, Slovakia, Sweden (NT), Switzerland, and UK.

Population Trend: Uncertain

Habitat and Ecology

Amanita friabilis is ectomycorrhizal exclusively with Alnus (A. glutinosa, A. incana, A. alnobetula) in forests, groves and bushes in wet to temporarily flooded biotopes.

The species occurs mainly in the following NATURA 2000 forest habitats:
9080 - Fennoscandian deciduous swamp woods
91E0 - Alluvial forests with Alnus glutinosa and Fraxinus excelsior

Subarctic ForestTemperate Forest


Regression of a specific habitat (mainly Alnus glutinosa in regularly flooded areas); sensitive to nitrogen.

Unintentional effects: subsistence/small scale (species being assessed is not the target) [harvest]Dams & water management/useNutrient loadsDroughts

Conservation Actions

Preserve stable riparian areas and favourable species-rich alder stands in wetlands.

Site/area protection

Research needed

Population size, distribution & trendsLife history & ecologyHabitat trends

Use and Trade


Romagnesi H. (1992) Bull. Soc. Mycol. France 108(2) : 78
Corriol G. (1999) Bull. Soc. Mycol. France 115(2) : 205

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted