Wittrock, Nordstedt & Lagerheim, Algae Aquae Dulcis Exs.
Wittrock, V.B.; Nordstedt, C.F.O.; Lagerheim, G. [1201 - 1612]

University Herbarium, University of California, Berkeley
Catalog #: UC761185
F. Borgesen #s.n. 14 June 1898
Pleurococcus vulgaris Nägeli
Faroe Islands, Streymoy, Insula Strömö [Island Streymoy], Thorshavn.

Miami University
Catalog #: 000212031
F. Börgesen #s.n. 14 June 1898
Pleurococcus vulgaris Nägeli
Faroe Islands, Insulæ Færoensis "Strömö" ad parietes ligneas cellarum penuariarum prope Thorshavn