Extract from Wikipedia article: Helvella lacunosa, known as the slate grey saddle or fluted black elfin saddle in North America, simply as the elfin saddle in Britain, is an ascomycete fungus of the family Helvellaceae. It is probably the most common species in the genus Helvella. The mushroom is readily identified by its irregularly shaped grey cap, fluted stem, and fuzzy undersurfaces. It is found in Eastern North America and in Europe, near deciduous and coniferous trees in summer and autumn.
Slate grey saddle mushroom (fluted black elfin saddle, Helvella lacunosa) collected during a mushroom excursion in Komarovo near Shchuchye Lake, north-west from Saint Petersburg. Russia, September 17, 2016 Ozernaya ul., Russia, 197733
Elfin saddle mushrooms (Helvella lacunosa) on an old campfire site in Sosnovka Park. Saint Petersburg, Russia, July 6, 2017 Unnamed Road, Sankt-Peterburg, Russia
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Search of mushroom species for given keywords "Helvella lacunosa" was done through
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