Schrader, H.A. (1794), Spicilegium Florae Germanicae: 167 [tax. nov.]

Fries, E.M. (1821), Systema Mycologicum 1: 360 [basionym]

basionym of: Polyporus caesius (Schrad.) Fr. legitimate

Karsten, P.A. (1881), Enumeratio Boletinearum et Polyporearum Fennicarum, systemate novo dispositarum. Revue Mycologique Toulouse 3 (9): 17 [basionym]

basionym of: Postia caesia (Schrad.) P.Karst. legitimate

Murrill, W.A. (1907), Polyporaceae, Part 1. North American Flora 9 (1): 34 [basionym]

basionym of: Tyromyces caesius (Schrad.) Murrill legitimate

Gilbertson, R.L. & Ryvarden, L. (1985), Some new combinations in Polyporaceae. Mycotaxon 22 (2): 365 [basionym]

basionym of: Oligoporus caesius (Schrad.) Gilb. & Ryvarden legitimate

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

nomenclatural synonym of: Postia caesia (Schrad.) P.Karst. legitimate

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