Basionym Name:Agaricus cinereofuscus Britzelm., Botan. Zbl. 62: 281 (1895)
Homotypic synonyms:Panaeolus cinereofuscus (Britzelm.) Sacc., [as 'cinero-fuscus'] Syll. fung. (Abellini) 11: 77 (1895)