Key to Danish species of Stemonitopsis (Nann.-Bremek.) Nann.-Bremek.

1 Sporocarps mostly with silvery remnants of the peridium. Spores with fine warts and groups of more prominent warts. S. typhina (F.H. Wigg.) Nann.-Bremek.
1' Sporocarps without peridial remnants. Spores with a delicate, very delicate net-ornamentation (olie imm.). 2
2   (1) Spores 3-4.5 µm in diam. Sporacarps broader at basis. S. microspora (Lister) Nann.-Bremek.
2' Spores 5-6 µm in diam. Sporocarps ± cylindrical. S. hyperopta (Meyl.) Nann.-Bremek.