Basionym: Helotium lacteum Ellis & Everh., Proc. Acad. Nat. Sci. Philadelphia 45: 56 (1888) [MB#219841] Obligate synonyms: - Belonioscypha lactea (Ellis & Everh.) Seaver, The North American Cup-fungi (Inoperculates): 177 (1951) [MB#293644] - Hymenoscyphus ellisii Dennis, Persoonia 3 (1): 48 (1964) [MB#332338] - Bisporella lactea (Ellis & Everh.) Stadelman, Nova Hedwigia 30: 830 (1979) [MB#309572] - Helotiella lactea (Ellis & Everh.) Sacc., Syll. Fung. 11: 415 (1895) [MB#242042] - Dasyscyphus lacteus (Ellis & Everh.) Sacc., Syll. Fung. 12: 175 (1889) [MB#193825] - Atractobolus lacteus (Ellis & Everh.) Kuntze, Revisio generum plantarum 3 (3): 446 (1898) [MB#523367] Taxonomic synonyms: - Helotium lacteum Cooke, Grevillea 8 (46): 63 (1879) [MB#219753] - Pezizella lactea (Cooke) Sacc., Syll. Fung. 8: 280 (1889) [MB#205684] - Hymenoscyphus lacteus (Cooke) Kuntze, Revisio generum plantarum 3 (3): 485 (1898) [MB#526716]