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

Brown University - Algae
Catalog #: ABRU00004783
E. N. Transeau s.n. 15 June 1911
Spirogyra illinoisensis Transeau
United States, Illinois, Lerna, IL

University of Michigan
Catalog #: 736648
E.N. Transeau #s.n. 15 June 1911
Spirogyra illinoisensis Transeau
United States, Illinois, Coles, Lerna

University of Michigan
Catalog #: 736700
E.N. Transeau #s.n. 15 June 1911
Spirogyra illinoisensis Transeau
United States, Illinois, Coles, Lerna