Havaas, Lich. Norveg. Occid. Exs. [Bergen]
Johan J. Havaas [1-300]
IndExs #587608277

Yale University Herbarium, Peabody Museum of Natural History
Catalog #: YU.185158
s.n.
Opegrapha atra Pers.
Norway

Lichen Herbarium of the Museum of Evolution, Uppsala University
Catalog #: L-136309
J.J. Havaas s.n. 00 August 1914
Opegrapha atra Pers.
Norway, Hordaland, Bømlo, Montis Vetahaug prope Mosterhavn