Jürgens, Algae Aquat. Jever.
Jürgens, G.H.B. [1 - [200]]

Field Museum of Natural History
Catalog #: C0500390F
Jürgens #s.n.
Oscillatoria chalybea Mertens
Germany, Lower Saxony, Insula Norderney

Field Museum of Natural History
Catalog #: C0500358F
Jürgens #s.n. 00 May 1911
Nodularia spumigena Mertens ex Bornet & Flahault
Germany, Lower Saxony, Norderney Island