Fries, Lich. Svec. Exs. [Lundae, 1824, fascicles I & II - reissued]
Elias M. Fries [1-60]
IndExs #313197970

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00032405
Stenhammer #s.n.
Opegrapha varia Pers.