Synonymy:
Peziza amorpha Pers., Syn. meth. fung. (Göttingen) 2: 657 (1801)
Thelephora amorpha (Pers.) Fr., Elench. fung. (Greifswald) 1: 183 (1828)
Corticium amorphum (Pers.) Fr., Epicrisis Systematis Mycologici: 559 (1838) [1836-1838]
Lachnea amorpha (Pers.) Gillet, Champignons de France, Discom.(4): 89 (1881) [1879]
Cyphella amorpha (Pers.) Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 215 (1886)
Terana amorpha (Pers.) Kuntze, Revis. gen. pl. (Leipzig) 2: 872 (1891)
Stereum amorphum (Pers.) E.H.L. Krause, Basid. Rostch., Suppl.: 81 (1929)

Peziza amorpha var. pruinata Alb. & Schwein., Consp. fung. (Leipzig): 329 (1805)

Nodularia balsamicola Peck, Ann. Rep. N.Y. St. Mus. 24: 96 (1872) [1871]

Position in classification:
Aleurodiscus, Stereaceae, Russulales, Incertae sedis, Agaricomycetes, Basidiomycota, Fungi

Note:
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