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

Brown University - Algae
Catalog #: ABRU00002835
J. E. Humphrey s.n. 10 October 1896
Tolypothrix tenuis Kützing ex Bornet & Flahault
United States, Maryland, Baltimore, MD

Yale University Herbarium
Catalog #: YU.091337
J. E. Humphrey s.n. 10 October 1896
Tolypothrix tenuis Kützing ex Bornet & Flahault
United States, Maryland, Baltimore; Baltimore, MD

Michigan State University Algae
Catalog #: MSC0185033
J.E. Humphrey #s.n. 10 October 1896
Tolypothrix tenuis Kützing ex Bornet & Flahault
United States, Maryland, Baltimore, Baltimore

Miami University - Algae
Catalog #: 000186662
J.E. Humphrey #s.n. 10 October 1896
Tolypothrix tenuis Kützing ex Bornet & Flahault
United States, Maryland, Baltimore, Baltimore