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

Brown University - Algae
Catalog #: ABRU00002715
F. S. Collins s.n. 21 September 1890
Hapalosiphon fontinalis var. tenuissimus (Grunow) Collins, Holden, & Setchell
United States, Massachusetts, Spot Pond, Medford, MA

Michigan State University Algae
Catalog #: MSC0182987
F.S. Collins #s.n. 21 September 1890
Hapalosiphon pumilus Kirchner ex Bornet & Flahault
United States, Massachusetts, Middlesex, Spot Pond, Medford

Miami University - Algae
Catalog #: 000210375
F.S. Collins #s.n. 21 September 1890
Hapalosiphon fontinalis var. tenuissimus (Grunow) Collins, Holden, & Setchell
United States, Massachusetts, Middlesex, Spot Pond, Medford

Yale University Herbarium
Catalog #: YU.106463
Frank Shipley Collins s.n. 21 September 1890
Hapalosiphon fontinalis var. tenuissimus (Grunow) Collins, Holden, & Setchell
United States, Massachusetts, Middlesex, Medford; Spot Pond, Medford, MA