Basionym: Polyporus obductus Berk., London Journal of Botany 4: 304 (1845) [MB#208032] Obligate synonyms: - Oligoporus obductus (Berk.) Gilb. & Ryvarden, Mycotaxon 22 (2): 365 (1985) [MB#105584] - Grifola obducta (Berk.) Aoshima & H. Furuk., Trans. mycol. Soc. Japan: 91 (1963) [MB#331521] - Tyromyces obductus (Berk.) Murrill, North American Flora 9 (1): 32 (1907) [MB#472018] Taxonomic synonyms: - Polyporus osseus Kalchbr., Fungi Europaei exsiccati, Klotzschii herbarii vivi mycologici continuatio. Editio nov. Series secunda. Cent. 8: no. 706 (1865) [MB#209573] - Grifola ossea (Kalchbr.) Pilát, Beih. Bot. Zentbl.: 58 (1934) [MB#253737] - Polypilus osseus (Kalchbr.) Parmasto, Tartu riik. ülik. Toim. 136, bot. Works: 124 (1963) [MB#337473] - Scutiger osseus (Kalchbr.) Step.-Kart., Aphyllophorovie gribi Urala [The Aphyllophorales of the Ural]: 212 (1967) [MB#339002] - Leptoporus osseus (Kalchbr.) Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 177 (1886) [MB#469766] - Leucoporus osseus (Kalchbr.) Quél., Flore mycologique de la France et des pays limitrophes: 404 (1888) [MB#469788] - Polyporus zelleri Murrill, Western Polypores (5): 13 (1915) [MB#172611]