Basionym Name:Hysterium gerardii Cooke & Peck, [as 'gerardi'] Bull. Buffalo Soc. nat. Sci. 3(1): 33 (1875)
Homotypic synonyms:Hysterographium gerardii (Cooke & Peck) Sacc., [as 'gerardi'] Syll. fung. (Abellini) 2: 783 (1883)