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

Brown University - Algae
Catalog #: ABRU00003199
F. S. Collins s.n. 18 January 1889
Microthamnion kuetzingianum Nägeli ex Kützing
United States, Massachusetts, Botanic Garden, Cambridge, MA

University of Michigan
Catalog #: 730147
F.S. Collins #s.n. 18 January 1889
Microthamnion kuetzingianum Nägeli ex Kützing
United States, Massachusetts, Middlesex, Botanic Garden, Cambridge

University of Michigan
Catalog #: 730149
F.S. Collins #s.n. 18 January 1889
Microthamnion kuetzingianum Nägeli ex Kützing
United States, Massachusetts, Middlesex, Botanic Garden, Cambridge

Michigan State University Algae
Catalog #: MSC0183529
F.S. Collins #s.n. 18 January 1889
Microthamnion kuetzingianum Nägeli ex Kützing
United States, Massachusetts, Middlesex, Botanic Garden, Cambridge

Miami University - Algae
Catalog #: 000187106
F.S. Collins #s.n. 18 January 1889
Microthamnion kuetzingianum Nägeli ex Kützing
United States, Massachusetts, Middlesex, Botanic Garden, Cambridge

Yale University Herbarium
Catalog #: YU.091651
Frank Shipley Collins s.n. 18 January 1889
Microthamnion kuetzingianum Nägeli ex Kützing
United States, Massachusetts, Middlesex, Cambridge; Botanic Garden, Cambridge, MA