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

Brown University - Algae
Catalog #: ABRU00003244
W. A. Setchell s.n. 08 May 1892
Phormidium subfuscum Kützing ex Gomont
United States, Connecticut, Still River, New Milford, CT

Michigan State University Algae
Catalog #: MSC0184029
W.A. Setchell #s.n. 08 May 1892
Phormidium subfuscum Kützing ex Gomont
United States, Connecticut, Litchfield, Still River, New Millford

Miami University - Algae
Catalog #: 000187147
W.A. Setchell #s.n. 08 May 1892
Phormidium subfuscum Kützing ex Gomont
United States, Connecticut, Litchfield, Still River, New Millford

Yale University Herbarium
Catalog #: YU.091688
William Albert Setchell s.n. 08 May 1892
Phormidium subfuscum Kützing ex Gomont
United States, Connecticut, Still River, New Milford, CT