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

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00031523
L.E. Schaerer, Bernae #s.n.
Lepraria incana (L.) Ach.

Uppsala University Exsiccati
Catalog #: L-114211
Schaerer s.n.
Lepraria incana (L.) Ach.
Switzerland, In sylva Könitzberg