Synonymy:
Lycoperdon cyathiforme Bosc, Mag. Gesell. naturf. Freunde, Berlin 5: 87 (1811)

Lycoperdon fragile Vittad., Monogr. Lycoperd. (Torino): 180 (36 of prepr.) (1842)
Utraria fragilis Quél., C. r. Assoc. Franç. Avancem. Sci. 14(2): 451 (1886)

Calvatia fragilis (Quél.) Morgan, J. Cincinnati Soc. Nat. Hist. 12(4): 168 (1890)
Calvatia cyathiformis subsp. fragilis (Quél.) Dring, Mycol. Pap. 98: 38 (1964)
Calvatia cyathiformis f. fragilis (Quél.) A.H. Sm., Lloydia 27: 150 (1964)

Position in classification:
Calvatia, Lycoperdaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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