Very rare european endemic species, restricted more or less to central Europe, redlisted in every country (France as “NT”), strongly declining (in Germany approx. 3-4 of formerly 28 populations are still exsistent)
endemic to Europe, with an emphasis on central Europe
In all countries only very few records are known, and many of these are old records or definetly extinct locations:
Belgium (1), Bulgaria (1), Denmark (2), France (10), Germany (28), Great Britain (2), Italy (1), Netherlands (1), Austria (6), Sweden (1), Switzerland (7) and Tschech Republic (1)
Most of the ocations are one-time-sights and have not been recorded in future years. Only very few stable populations are known, most of them from south-west Germany.
Population Trend: Deteriorating
near-natural vegetation along big or small rivers, semi-rural shrub vegetation along riversides, rural forest borders, old parks with old shrubs,
on small pieces of wood or truncs of differents shrubs (also introduced species), Sambucus or Fraxinus
Removing or changing of river side vegetation, extensive gardening in old parks and gardens, changing of the water level by draining, extensive activity of people at the riversides (e. g. fishing)
Monitoring of the existent locations for a better understanding of its ecology and to its reactions on influences on the biotop
Lüderitz & Gminder (2014): Verantwortungsarten bei Großpilzen in Deutschland. Beih. Z. Mykol. 13: 1-224.