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

Arizona State University Lichen Herbarium
Catalog #: 507837
L.E. Schaerer s.n.
Lecidea rupestris f. calva Dicks.
Switzerland, ?, ?, ?

Uppsala University Exsiccati
Catalog #: L-131271
Ludov. Eman. Schaerer s.n.
Protoblastenia calva (Dickson) Zahlbr.
Switzerland, saxa calcaria