Basionym Name:Agaricus stevensonii Berk. & Broome, Ann. Mag. nat. Hist., Ser. 4 15(no. 85): 41 (1875)
Homotypic synonyms:Collybia stevensonii (Berk. & Broome) Sacc., Syll. fung. (Abellini) 5: 226 (1887)