Synonymy:
Xerula caussei Maire, Bull. Trimestriel Soc. Mycol. France 53: 265 (1937)
Marasmius caussei (Maire) Pilát, Klíc Kurc. Naš. Hub Hrib. Bedl.: 185 (1951)
Oudemansiella caussei (Maire) M.M. Moser, Nova Hedwigia 28(1): 19 (1977)

Oudemansiella nigra Dörfelt, Česká Mykol. 27(1): 28 (1973)
Xerula nigra (Dörfelt) Dörfelt, Landschaftspflege Naturschutz Thüringen 14(3): 60 (1977)

Position in classification:
Paraxerula, Physalacriaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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