While studying variability in European specimens of Ganoderma adspersum (S. Schulz.) Donk (= G. europaeum Steyaert), it was found that the only reliable distinguishing feature from G. applanatum (Pers. ex S. F. Gray) Pat. is spore size; other characters are variable and unreliable. A list of herbarium localities is given for Czechoslovakia and other European countries. The species appears to grow primarily outside natural forests, such as in parks and gardens.
Kotlaba F., Pouzar Z. (1971): Ganoderma adspersum (S. Schulz) Donk-a species resembling G. applanatum (Pers. ex S. F. Gray) Pat. (Tab. 80). – Česká Mykologie 25(2): 88–102.
