Arnold, Lich. Exs. Lich. Jur. [Eichstätt]
Ferdinand Christian Gustav Arnold [1-1816]
IndExs #540905952

Lichen Herbarium of the Museum of Evolution, Uppsala University
Catalog #: L-169926
Hegetschweiler s.n.
Arthonia didyma Körb.
Switzerland, Zürich, bei Cappel, Zürich

Duke University Herbarium Lichen Collection
Catalog #: 388204
763b0158-70be-4387-a739-18e6e046fbe5
Hegetschweiler, C. #s.d.
Arthonia didyma Körb.
Switzerland, Zurich, Bei Cappel; Zürich

Duke University Herbarium Lichen Collection
Catalog #: 388205
c523cbe2-0b92-4027-8e3a-857478dd0a6a
Hegetschweiler, C. #s.n.
Arthonia didyma Körb.
Switzerland, Zurich, Bei Cappel; Zürich