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

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00026114
L.E. Schaerer, Bernae s.n.
Calicium salicinum Pers.
, Helvetici

Uppsala University Exsiccati
Catalog #: L-131292
Ludov. Eman. Schaerer s.n.
Calicium hyperellum var. salicinum
Switzerland, in m. Gurnigel