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

Brown University - Algae
Catalog #: ABRU00003065
F. S. Collins s.n. 24 May 1898
Phormidium uncinatum (C.Agardh ex Gomont) Gomont
United States, Massachusetts, Valley St., Medford, MA

Michigan State University Algae
Catalog #: MSC0184038
F.S. Collins #s.n. 24 May 1898
Phormidium uncinatum (C.Agardh ex Gomont) Gomont
United States, Massachusetts, Middlesex, Valley St., Medford

Miami University - Algae
Catalog #: 000210403
F.S. Collins #s.n. 24 May 1898
Phormidium uncinatum (C.Agardh ex Gomont) Gomont
United States, Massachusetts, Middlesex, Valley St., Medford

Yale University Herbarium
Catalog #: YU.106507
Frank Shipley Collins s.n. 24 May 1898
Phormidium uncinatum (C.Agardh ex Gomont) Gomont
United States, Massachusetts, Middlesex, Medford; Valley St., Medford, MA