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

San Diego Natural History Museum - Algae
Catalog #: SD00001636
F. W. Hooper s.n.
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West

Field Museum of Natural History
Catalog #: C0532759F
F. W. Hooper #s.n.
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West

Field Museum of Natural History
Catalog #: C0532768F
F. W. Hooper #s.n.
Penicillus capitatus Lamarck
United States, Florida, Key West

University Herbarium, University of California, Berkeley
Catalog #: UC98136
F. W. Hooper #s.n.
Penicillus pyriformis A.Gepp & E.S.Gepp
United States, Florida, Monroe, Key West

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00205503
1e7b4080-35f6-412b-ac31-94a7dee9ffc1
F. W. Hooper #s.n.
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 730826
F.W. Hooper #43
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 730831
F.W. Hooper #s.n.
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West

University of Michigan
Catalog #: 730832
F.W. Hooper #s.n.
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West

Yale University Herbarium
Catalog #: YU.095627
Franklin William Hooper #43
Penicillus capitatus Lamarck
United States, Florida, Monroe, Key West; Key West