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

Uppsala University Exsiccati
Catalog #: L-115330
s.n.
Lecidea obscurata (Ach.) Schaer.
Switzerland, Grimsel

Duke University Herbarium
Catalog #: 17526
bdff6dfa-fa34-11e2-a92b-005056000560
Schaerer, Ludwig, Emanuel #s.n.
Rhizocarpon obscuratum (Ach.) A. Massal.
Switzerland, Grimsel.