Boletus biennis Bull., Herbier de la France 10: t. 449:1 (1790) [MB206101]
Obligate Synonyme:
Polyporus biennis (Bull.) Fr., Epicrisis Systematis Mycologici: 433 (1838) [MB191010]
Daedalea biennis (Bull.) Fr., Systema Mycologicum 1: 332 (1821) [MB356489]
Phaeolus biennis (Bull.) Pilát, Beih. Bot. Zentbl.: 69 (1934) [MB251005]
Sistotrema bienne (Bull.) Pers., Synopsis methodica fungorum: 550 (1801) [MB440425]
Hydnum bienne (Bull.) DC., Flore française 2: 112 (1805) [MB469510]
Heteroporus biennis (Bull.) Lázaro Ibiza, Revista de la Real Academia de Ciencias Exactas Fisicas y Naturales Madri 15: 120 (1916) [MB118766]
Thelephora biennis (Bull.) Fr., Systema Mycologicum 1: 449 (1821) [MB156401]
Sistotrema rufescens subsp. bienne (Bull.) Pers., Mycologia Europaea 2: 207 (1825) [MB497643]
Grifola biennis (Bull.) Zmitr. & Malysheva, Mycena 6: 21 (2006) [MB504912]
Taxonomische Synonyme:
Irpex hydniformis Velen., Ceske Houby 4-5: 741 (1922) [MB267482]
Antrodia terrei (Berk. & Broome) P. Karst., Meddelanden af Societas pro Fauna et Flora Fennica 5: 40 (1879) [MB100862]
Lentinus lusitanicus Kalchbr., Jornal de Sciencias Mathematicas Physicas e Naturales Academia Real das Sciencias de Lisboa 6 (24): 241 (1878) [MB171843]
Sistotrema rufescens Pers., Synopsis methodica fungorum: 550 (1801) [MB214976]
Polyporus rufescens (Pers.) Fr., Systema Mycologicum 1: 351 (1821) [MB245670]
Hydnum rufescens (Pers.) Poir. (1808) [MB473434]
Daedalea rufescens (Pers.) Secr., Mycogr. Suisse (1833) [MB255600]
Trametes rufescens (Pers.) G.H. Otth, Mycogr. Suisse (1860) [MB450006]
Polystictus rufescens (Pers.) P. Karst., Bidrag till Kännedom av Finlands Natur och Folk 37: 69 (1882) [MB119051]
Boletus distortus Schwein., Schriften der Naturforschenden Gesellschaft zu Leipzig 1: 97 (1822) [MB468265]
Polyporus distortus (Schwein.) Fr., Elenchus Fungorum 1: 79 (1828) [MB231155]
Heteroporus distortus (Schwein.) Bondartsev & Singer, Annales Mycologici 39 (1): 62 (1941) [MB298433]
Abortiporus distortus (Schwein.) Murrill, Bulletin of the Torrey Botanical Club 31 (8): 422 (1904) [MB431381]
Polyporus biennis var. distortus (Schwein.) P.W. Graff, Mycologia 31 (4): 476 (1939) [MB258476]
Abortiporus biennis f. distortus (Schwein.) Bondartsev, The Polyporaceae of the European USSR and Caucasia: 541 (1953) [MB347711]
Daedalea distorta (Schwein.) Pat., Essai taxonomique sur les familles et les genres des Hyménomycètes: 96 (1900) [MB491373]
Trametes terrei Berk. & Broome, Annals and Magazine of Natural History 17: 136 (1876) [MB212175]
Polyporus balloui Lloyd, Mycol. Writ. 4 (Letter 58): 7 (1915) [MB454048]
Polyporus biennis var. ball
