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

Field Museum of Natural History
Catalog #: C0510167F
Miss G. A. Hall #s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West

Brown University - Algae
Catalog #: ABRU00003854
Mrs. G. A. Hall s.n.
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Key West, FL

Yale University Herbarium
Catalog #: YU.092226
Mrs. G. A. Hall s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West; Key West

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00221175
e71247d7-67a1-42a2-8127-2efb06f62ca6
Mrs. G. A. Hall #s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 668363
Mrs. G.A. Hall #s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 668381
Mrs. G.A. Hall #s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West

Michigan State University Algae
Catalog #: MSC0184291
Mrs. G.A. Hall #s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West

Miami University - Algae
Catalog #: 000188135
Mrs. G.A. Hall #s.n. 00 September 1896
Polysiphonia opaca (C.Agardh) Moris & De Notaris
United States, Florida, Monroe, Key West