Farlow, Anderson & Eaton, Algae Exs. Amer. Bor.
Farlow, W.G.; Anderson, C.L.; Eaton, D.C. [1 - 230]

Field Museum of Natural History
Catalog #: C0505193F
F. W. Hooper #s.n.
Hypnea spinella (C.Agardh) Kützing
United States, Florida, Monroe, Key West

San Diego Natural History Museum - Algae
Catalog #: SD00005455
F. W. Hooper #s.n.
Hypnea spinella (C.Agardh) Kützing
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 659964
F.W. Hooper #s.n.
Hypnea spinella (C.Agardh) Kützing
United States, Florida, Monroe, Key West

Yale University Herbarium
Catalog #: YU.095732
Franklin William Hooper s.n.
Hypnea spinella (C.Agardh) Kützing
United States, Florida, Monroe, Key West; Key West