RijksHerbarium & Delta Institute for Hydrobiological Research [? - ?]

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0025034
R. H. [Rijksherbarium, Leiden] #29 16 January 1975
Porphyra umbilicalis Kützing
Netherlands, Zeeland, Vlissingen, Nederland, Zeeland, Walcheren, Vlissingen, Nolledijk

University of North Carolina Wilmington, David J. Sieren Herbarium
Catalog #: WNC-A-0002783
R. H. [Rijksherbarium, Leiden] #29 16 January 1975
Porphyra umbilicalis Kützing
Netherlands, Zeeland, Vlissingen, Walcheren, Vlissingen, Nolledijk

Field Museum of Natural History
Catalog #: C0503817F
R. H. [Rijksherbarium, Leiden] #s.n. 16 January 1975
Porphyra umbilicalis Kützing
Netherlands, Zeeland, Vlissingen, Nederland, Zeeland, Walcheren, Vlissingen, Nolledijk