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

Brown University - Algae
Catalog #: ABRU00003710
M. A. Howe s.n. 30 October 1902
Polythrix corymbosa Grunow ex Bornet & Flahault
United States, Florida, Key West, FL

Yale University Herbarium
Catalog #: YU.092099
Marshall A. Howe s.n. 30 October 1902
Polythrix corymbosa Grunow ex Bornet & Flahault
United States, Florida, Monroe, Key West; Key West

Michigan State University Algae
Catalog #: MSC0184331
Marshall A. Howe #s.n. 30 October 1902
Polythrix corymbosa Grunow ex Bornet & Flahault
United States, Florida, Monroe, Key West

Miami University - Algae
Catalog #: 000187993
Marshall A. Howe #s.n. 30 October 1902
Polythrix corymbosa Grunow ex Bornet & Flahault
United States, Florida, Monroe, Key West