Schaerer: Lich. Helv. Exs.
Ludwig Emanuel Schaerer [1-650]

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00028208
L.E. Schaerer, Bernae #s.n.
Cladonia pleurota (Flörke) Schaer.
Switzerland

Uppsala University Exsiccati
Catalog #: L-114260
Schaerer s.n.
Cladonia pleurota (Flörke) Schaer.
Switzerland, In m. Grimsel