Persoon, C.H. (1796), Observationes mycologicae 1: 398 [tax. nov.]

Fries, E.M. (1821), Systema Mycologicum 1: 311 [basionym]

basionym of: Agaricus cinereus var. macrorhizus (Pers.) Fr. legitimate

Rea, C. (1922), British Basidiomycetae: A handbook to the larger British fungi: 503 [basionym]

basionym of: Coprinus macrorhizus (Pers.) Rea legitimate

AusFungi (2019), AusFungi 21 Jan. 2019: - [taxonomic synonym]

taxonomic synonym of: Coprinopsis cinerea (Schaeff.) Redhead, Vilgalys & Moncalvo legitimate

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