Synonymy:
Corticium umbonatum G. Cunn., Trans. Roy. Soc. N.Z. 82: 298 (1954)
Xenasma umbonatum (G. Cunn.) Hjortstam, Mycotaxon 54: 192 (1995)

Hypochnicium pleurobasidiatum Boidin, Cand. & Gilles, Trans. Mycol. Soc. Japan 27(4): 468 (1987) [1986]

Position in classification:
Cunninghammyces, Cyphellaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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