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

Brown University - Algae
Catalog #: ABRU00003476
F. S. Collins s.n. 01 June 1901
Calothrix scopulorum C.Agardh ex Bornet & Flahault
United States, Massachusetts, Marblehead, MA

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00233746
6174208f-22c9-491a-9bad-93160d9b8097
F. S. Collins #s.n. 01 June 1901
Calothrix scopulorum C.Agardh ex Bornet & Flahault
United States, Massachusetts, Essex, Marblehead

Michigan State University Algae
Catalog #: MSC0181536
F.S. Collins #s.n. 01 June 1901
Calothrix scopulorum C.Agardh ex Bornet & Flahault
United States, Massachusetts, Essex, Marblehead

Miami University - Algae
Catalog #: 000187436
F.S. Collins #s.n. 01 June 1901
Calothrix scopulorum C.Agardh ex Bornet & Flahault
United States, Massachusetts, Essex, Marblehead

Yale University Herbarium
Catalog #: YU.091888
Frank Shipley Collins s.n. 01 June 1901
Calothrix scopulorum C.Agardh ex Bornet & Flahault
United States, Massachusetts, Essex, Marblehead; Marblehead, MA