Small Witch's Broom (densely branched small twigs) on a birch induced by a parasitic fungus Taphrina betulina(?) near Morskaya, west from Saint Petersburg. Russia, March 16, 2017 Санкт-Петербург, Невская губа
Comments
Search of mushroom species for given keywords "Taphrina betulina" was done through
catalogueoflife.org.