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

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0027999
Holden, Isaac #s.n. 23 June 1901
Scytonema figuratum C.Agardh ex Bornet & Flahault
United States, Connecticut, Litchfield, Gaylordsville; On shore of Housatonic River near Gaylordsville

Brown University - Algae
Catalog #: ABRU00003537
I. Holden s.n. 23 June 1901
Scytonema figuratum C.Agardh ex Bornet & Flahault
United States, Connecticut, Housatonic River, near Gaylordsville, CT

Yale University Herbarium
Catalog #: YU.091940
Isaac Holden s.n. 23 June 1901
Scytonema figuratum C.Agardh ex Bornet & Flahault
United States, Connecticut, Housatonic River, near Gaylordsville, CT

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0012606
Isaac Holden #857 23 June 1901
Scytonema figuratum C.Agardh ex Bornet & Flahault
United States, Connecticut, Litchfield, New Milford; Housatonic River, near Gaylordsville, CT; 41.64706 -73.483303

Michigan State University Algae
Catalog #: MSC0184642
Isaac Holden #s.n. 23 June 1901
Scytonema figuratum C.Agardh ex Bornet & Flahault
United States, Connecticut, Litchfield, Shore of Housatonic River near Gaylordsville

Miami University - Algae
Catalog #: 000187493
Isaac Holden #s.n. 23 June 1901
Scytonema figuratum C.Agardh ex Bornet & Flahault
United States, Connecticut, Litchfield, Shore of Housatonic River near Gaylordsville