Remarks on the genus Hymenoscohus S. F. Gray, with observations on sundry species referred by Saccardo and others to the genera Helotium, Pezizella or Phialea

The author proposes to replace the generic name Helotium Pers. ex. St. Amans, revived by Fries in 1849, by Cudoniella Sacc. but to transfer most of the species commonly assigned to the genus to Hymenoscyphus S. F. Gray. Eighty-four species referred to genera of Helotiaceae by Saccardo and others are discussed in the light of the types or other authentic material. Finally there is appended a list of 102 accepted species, distributed in Cudoniella (3), Hymenoscyphus (77 arranged in 7 series), Ciboriella (3), Phaeohelotium (2), Sphagnicola (5), Discinella (4) and Ciboriopsis (8).