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

University Herbarium, University of California, Berkeley
Catalog #: UC1835475
R. H. #20 15 January 1975
Ralfsia verrucosa (Areschoug) ??Areschoug
Netherlands, Zeeland, Goes, Zuid-Beveland, Sas van Goes

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0026408
R. H. [Rijksherbarium, Leiden] #20 15 January 1975
Ralfsia verrucosa (Areschoug) J. Agardh
Netherlands, Zeeland, Goes, Nederland, Zeeland, Zuid-Beveland, Sas van Goes

University of North Carolina Wilmington, David J. Sieren Herbarium
Catalog #: WNC-A-0002199
R. H. [Rijksherbarium, Leiden] #20 15 January 1975
Ralfsia verrucosa (Areschoug) ??Areschoug
Netherlands, Zeeland, Goes, Nederland, Zeeland, Zuid-Beveland, Sas van Goes