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

Brown University - Algae
Catalog #: ABRU00003420
F. S. Collins s.n. 10 June 1900
Isactis centrifuga Bornet
United States, Rhode Island, Ochre Point, Newport, RI

Miami University - Algae
Catalog #: 000187391
F. S. Collins #s.n. 10 June 1900
Pleurococcus vulgaris Nägeli
United States, Rhode Island, Newport, Ochre Point, Newport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00234498
86a725a7-3359-4c5a-9a2a-6373e0f17a10
F. S. Collins #s.n. 10 June 1900
Isactis Thuret ex Bornet & Flahault, 1886
United States, Rhode Island, Newport, Ochre Point, Newport

Michigan State University Algae
Catalog #: MSC0183105
F.S. Collins #s.n. 10 June 1900
Isactis centrifuga Bornet
United States, Rhode Island, Newport, Ochre Point, Newport

Yale University Herbarium
Catalog #: YU.091840
Frank Shipley Collins s.n. 10 June 1900
Isactis centrifuga Bornet
United States, Rhode Island, Newport; Ochre Point, Newport, RI