Synonymy:
Polyporus spraguei Berk. & M.A. Curtis, Grevillea 1(no. 4): 50 (1872)
Tyromyces spraguei (Berk. & M.A. Curtis) Murrill, N. Amer. Fl. (New York) 9(1): 33 (1907)
Trametes spraguei (Berk. & M.A. Curtis) Ryvarden, in Ryvarden & Johansen, Prelim. Polyp. Fl. E. Afr. (Oslo): 586 (1980)
Pilatoporus spraguei (Berk. & M.A. Curtis) Vampola, Czech Mycol. 49(2): 90 (1996)
Niveoporofomes spraguei (Berk. & M.A. Curtis) B.K. Cui, M.L. Han & Y.C. Dai, in Han, Chen, Shen, Song, Vlasák, Dai & Cui, Fungal Diversity 80: 360 (2016)
Daedalea spraguei (Berk. & M.A. Curtis) Zmitr. & Sytin, Mikol. Fitopatol. 60(3): 377 (2026)

Polyporus sordidus Cooke, Grevillea 15(no. 73): 20 (1886)

Tyromyces subtrimiticus Corner, Beih. Nova Hedwigia 96: 201 (1989)

Tyromyces subtrimiticus var. aurantitingens Corner, Beih. Nova Hedwigia 96: 202 (1989)

Position in classification:
Niveoporofomes, Fomitopsidaceae, Polyporales, Incertae sedis, Agaricomycetes, Basidiomycota, Fungi

Note:
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