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

Brown University - Algae
Catalog #: ABRU00003111
C. Messina s.n.
Polysiphonia thyrsigera J.Agardh
United States, Florida, Key West, FL

Yale University Herbarium
Catalog #: YU.091574
C. Messina s.n.
Polysiphonia thyrsigera J.Agardh
United States, Florida, Monroe, Key West; Key West

Michigan State University Algae
Catalog #: MSC0184308
C. Messina #s.n.
Polysiphonia thyrsigera J.Agardh
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 643993
Carrie Messina #s.n.
Bryocladia thyrsigera (J.Agardh) F.Schmitz
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 667740
Carrie Messina #s.n.
Polysiphonia thyrsigera J.Agardh
United States, Florida, Monroe, Key West

Field Museum of Natural History
Catalog #: C0510249F
Miss C. Messina #s.n.
Polysiphonia thyrsigera J.Agardh
United States, Florida, Monroe, Key West

Miami University - Algae
Catalog #: 000186899
Mrs. W.C. Simmons #s.n.
Polysiphonia thyrsigera J.Agardh
United States, Rhode Island, Newport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00221635
742abcdc-9119-4e60-8f06-f9d40200da7e
Ms. C. Messina #s.n.
Polysiphonia thyrsigera J.Agardh
United States, Florida, Key West