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

Brown University - Algae
Catalog #: ABRU00003802
M. A. Howe s.n. 07 October 1902
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, Florida, St. Augustine, FL

Field Museum of Natural History
Catalog #: C0512283F
M. A. Howe #s.n. 07 October 1902
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, Florida, Saint Johns, St. Augustine

Yale University Herbarium
Catalog #: YU.106603
Marshall A. Howe s.n. 07 October 1902
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, Florida, St. Augustine, FL

University of Michigan
Catalog #: 662171
Marshall A. Howe #s.n. 07 October 1902
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, Florida, Saint Johns, St. Augustine

University of Michigan
Catalog #: 662181
Marshall A. Howe #s.n. 07 October 1902
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, Florida, Saint Johns, St. Augustine

Michigan State University Algae
Catalog #: MSC0184295
Marshall A. Howe #s.n. 07 October 1902
Polysiphonia paniculata Montagne
United States, Florida, Saint Johns, Saint Augustine

Miami University - Algae
Catalog #: 000188084
Marshall A. Howe #s.n. 07 October 1902
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, Florida, Saint Johns, St. Augustine