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Schaerer, Lich. Helv. Exs. Ed. I [Bernae (Berne)]
Ludwig Emanuel Schaerer [1-650]
IndExs #729589223
Arizona State University Lichen Herbarium
Catalog #:
L.E. Schaerer s.n.
Opegrapha atra var. denigrata (Ach.) Schaer.
Switzerland, Bern, around Belp
Duke University Herbarium Lichen Collection
Catalog #: 396351
1f3dff8c-0dcc-4419-92d3-fd6364ae5417
Schaerer, Ludwig, Emanuel #s.n.
Arthonia atra (Pers.) A. Schneid.
Switzerland, Bern, Circa Belp