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

Arizona State University Lichen Herbarium
Catalog #: 507806
L.E. Schaerer s.n.
Lecidea lucida Ach.
Switzerland, Bern, Hasligrund

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00035174
L.E. Schaerer, Bernae #s.n.
Psilolechia lucida (Ach.) Choisy
, Helvetici

Uppsala University Exsiccati
Catalog #: L-131275
Ludov. Eman. Schaerer s.n.
Psilolechia lucida (Ach.) Choisy
Switzerland, Haslingrund

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00032044
Schaerer #s.n.
Melanelia stygia (L.) Essl.
Switzerland, Alpes editiores, ad saxa.