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

Brown University - Algae
Catalog #: ABRU00004253
C. Bullard s.n.
Tetraspora cylindrica (Wahlenberg) C.Agardh
United States, Minnesota, Lake Superior, Two Harbors, MN

Yale University Herbarium
Catalog #: YU.094560
Charles Bullard s.n. 00 August 1906
Tetraspora cylindrica (Wahlenberg) C.Agardh
United States, Minnesota, Lake Superior, Two Harbors, MN

University of Michigan
Catalog #: 732294
Charles Bullard #s.n. 00 August 1906
Tetraspora cylindrica (Wahlenberg) C.Agardh
United States, Minnesota, Lake, Lake Superior, Two Harbors

University of Michigan
Catalog #: 732297
Charles Bullard #s.n. 00 August 1906
Tetraspora cylindrica (Wahlenberg) C.Agardh
United States, Minnesota, Lake, Lake Superior, Two Harbors

Michigan State University Algae
Catalog #: MSC0185002
Charles Bullard #s.n. 00 August 1906
Tetraspora cylindrica (Wahlenberg) C.Agardh
United States, Minnesota, Lake, North shore of Lake Superior, Two Harbors

Miami University - Algae
Catalog #: 000188642
Charles Bullard #s.n. 00 August 1906
Tetraspora cylindrica (Wahlenberg) C.Agardh
United States, Minnesota, Lake, North shore of Lake Superior, Two Harbors