Basionym: Boletus ovinus Schaeff., Fungorum qui in Bavaria et Palatinatu circa Ratisbonam nascuntur Icones 4: 83, t. 121-122 (1774) [MB#199644] Obligate synonyms: - Scutiger ovinus (Schaeff.) Murrill, Mycologia 12 (1): 20 (1920) [MB#273167] - Boletus crispus Batsch, Elenchus fungorum: 103 (1783) [MB#473280] - Boletus fragilis J.F. Gmel., Systema Naturae 2 (2): 1434 (1792) [MB#468277] - Caloporus ovinus (Schaeff.) Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 164 (1886) [MB#468389] - Polyporus ovinus (Schaeff.) Fr., Systema Mycologicum 1: 346 (1821) [MB#209438] Taxonomic synonyms: - Boletus albidus Pers., Synopsis methodica fungorum: 515 (1801) [MB#486530] - Albatrellus albidus (Pers.) Gray, A natural arrangement of British plants 1: 645 (1821) [MB#431367] - Polyporus limonius Velen., Ceske Houby 4-5: 668 (1922) [MB#269497] - Polyporus lutescens Velen., Ceske Houby 4-5: 669 (1922) [MB#473246] - Boletus carinthiacus Pers., Synopsis methodica fungorum: 514 (1801) [MB#468249] - Polyporus subsquamosus var. luteolus Beck, Verhandlungen der Zoologisch-Botanischen Gesellschaft Wien 36: 469 (1886) [MB#199262]