Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

Brown University - Algae
Catalog #: ABRU00004065
I. Holden s.n. 05 September 1901
Fucus platycarpus Thuret
United States, Connecticut, Woodmont, CT

Field Museum of Natural History
Catalog #: C0521686F
I. Holden #s.n. 05 September 1901
Fucus platycarpus Thuret
United States, Connecticut, New Haven, Woodmont

Yale University Herbarium
Catalog #: YU.094373
Isaac Holden s.n. 05 September 1901
Fucus platycarpus Thuret
United States, Connecticut, Woodmont, CT

University of Michigan
Catalog #: 611468
Isaac Holden #s.n. 05 September 1901
Fucus spiralis Linnaeus
United States, Connecticut, New Haven, Woodmont

University of Michigan
Catalog #: 611478
Isaac Holden #s.n. 05 September 1901
Fucus spiralis Linnaeus
United States, Connecticut, New Haven, Woodmont

Michigan State University Algae
Catalog #: MSC0182702
Isaac Holden #s.n. 05 September 1901
Fucus spiralis Linnaeus
United States, Connecticut, New Haven, Woodmont

Miami University - Algae
Catalog #: 000188342
Isaac Holden #s.n.
Fucus spiralis Linnaeus
United States, Connecticut, New Haven, Woodmont