Current name: Boletopsis grisea (Peck) Bondartsev & Singer, Ann. Mycol. 39 (1): 47 (1941) [MB#293748]
Basionym:
Polyporus griseus Peck, Bull. Buffalo Soc. Nat. Sci. 1 (6-9): 60 (1873) [MB#165315]
Obligate synonym: Scutiger griseus (Peck) Murrill, Bull. Torrey Bot. Club 30 (8): 431 (1903) [MB#471587]
Taxonomic synonyms: - Polyporus maximovicii Velen., Ceské Houby 4-5: 669 (1922) [MB#270683]
- Polyporus earlei Underw., Bull. Torrey Bot. Club 24: 84 (1897) [MB#225715]
- Polyporus involutus Britzelm., Bot. Centralbl. 68: 140 (1896) [MB#153213]
