Name requested: Polyporus borealis

	Annales Mycologici 25 (3-4): 349.
	Mycologia 9 (3): 132. 9 (5): 266. 11 (5): 266. 33 (1): 97. 39 (4): 474. 48 (1): 101. 50 (6): 831, 832, 833, 834, 835. 53 (5): 485.

Homotypic synonym: Spongipellis borealis

	Mycologia 7 (6): 300. 12 (1): 41. 65 (6): 1322, 1326.
	Mycology and Phytopathology [as Микология и Фитопатология] 12 (5): 425, 426, 427, 428.
	Sydowia 9 (1-6): 104, 186. 21 (1-6): 209. 26 (1-6): 120.

Homotypic synonym: Tyromyces borealis

Mycologia 59 (5): 917.

Homotypic synonym: Abortiporus borealis

	Mycologia 36 (1): 68. 39 (2): 189.
	Mycotaxon 7 (2): 339.

Homotypic synonym: Climacocystis borealis

	Mycotaxon 8 (1): 208, 213, 214, 216. 33: 273. 52 (1): 43. 74 (1): 155. 78: 403. 82: 298, 303, 306. 102: 117.
	Persoonia 8 (3): 254, 256.

Heterotypic synonym: Polyporus pacificus

Mycologia 53 (5): 485.