Basionym Name:Agaricus efflorescens Berk. & M.A. Curtis, Proc. Amer. Acad. Arts & Sci. 4: 112 (1860)
Homotypic synonyms:Agaricus effugiens (Quél.) Quél., in Cooke & Quélet, Clavis syn. Hymen. Europ. (London): 84 (1878)Collybia efflorescens (Berk. & M.A. Curtis) Sacc., Syll. fung. (Abellini) 5: 220 (1887)