Tricholoma myomyces  (Pers.) J.E. Lange (1933)

Syn: Tricholoma terreum (Schaeff.) P. Kumm. (1871)

The myomyces/terreum complex consists of the smaller, Collybioid dark gray-brown Tricholomas found typically under conifers. The nomenclature of that group appears rather unsettled, but according to Index Fungorum, terreum is synonymized with myomyces.