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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.
Verrucaria umbrina var. nigrescens (Pers.) Ach.
Switzerland, ?, ?, Alps
Duke University Herbarium Lichen Collection
Catalog #: 396191
1159b867-f2a1-4a1b-ae82-c0e185a700d9
Schaerer, Ludwig, Emanuel #s.n.
Verrucaria nigrescens Pers.
Switzerland, In Alpibus