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

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00025330
L.E. Schaerer, Bernae #s.n.
Aspicilia calcarea (L.) Mudd
, Helvetici

Uppsala University Exsiccati
Catalog #: L-114215
Schaerer s.n.
Trypethelium tuberculosum (Vain.) R.C. Harris
Switzerland, In m. Kirchet