Protomerulius dubius (Bourdot & Galzin) Spirin & Malysheva, in Spirin, Malysheva, Miettinen, Vlasák, Alvarenga, Gibertoni, Ryvarden & Larsson, Mycol. Progr. 18(9): 1089 (2019)

Synonymy:
Heterochaete dubia Bourdot & Galzin, Bull. Soc. Mycol. France 25(1): 30 (1909)
Sebacina dubia (Bourdot & Galzin) Bourdot, C. r. Assoc. Franç. Avancem. Sci. 45: 576 (1922) [1921]
Heterochaetella dubia (Bourdot & Galzin) Bourdot & Galzin, Hyménomyc. de France (Sceaux): 51 (1928) [1927]
Stypella dubia (Bourdot & Galzin) P. Roberts, Mycotaxon 69: 216 (1998)

Heterochaetella dubia var. dasychaeta Bourdot & Galzin, Hyménomyc. de France (Sceaux): 52 (1928) [1927]

Heterochaetella dubia f. sphaerospora Bourdot & Galzin, Hyménomyc. de France (Sceaux): 52 (1928) [1927]

Heterochaetella dubia var. mesochaeta Bourdot & Galzin, Hyménomyc. de France (Sceaux): 52 (1928) [1927]

Heterochaetella dubia f. brachyspora Bourdot & Galzin, Hyménomyc. de France (Sceaux): 52 (1928) [1927]

Heterochaetella dubia f. crassior Bourdot & Galzin, Hyménomyc. de France (Sceaux): 52 (1928) [1927]

Heterochaetella dubia var. psilochaeta Bourdot & Galzin, Hyménomyc. de France (Sceaux): 52 (1928) [1927]
Sebacina psilochaeta (Bourdot & Galzin) L.S. Olive, Bull. Torrey bot. Club 85: 89 (1958)

Heterochaetella bispora Luck-Allen, Canad. J. Bot. 38: 563 (1960)

Sebacina pruinosa McNabb, New Zealand J. Bot. 7: 243 (1969)
Heterochaetella pruinosa (McNabb) Wojewoda, Mała Flora Grzybów, 2 Basidiomycetes (Podstawczaki) Tremellales (Trzesakowe) Auriculariales (Uszakowe) (Warszawa): 97 (1981)

Position in classification:
Protomerulius, Exidiaceae, Auriculariales, Auriculariomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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