Basionym Name:Helotium gracile Cooke & Peck, in Peck, Ann. Rep. N.Y. St. Mus. nat. Hist. 26: 83 (1874)
Homotypic synonyms:Hymenoscyphus gracilis (Cooke & Peck) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 485 (1898)Phialea gracilis (Cooke & Peck) Sacc., Syll. fung. (Abellini) 8: 265 (1889)