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

Brown University - Algae
Catalog #: ABRU00003529
Mrs. W. C. Simmons s.n.
Polyides rotunda (Hudson) Gaillon
United States, Rhode Island, Easton's Point, Newport, RI

Yale University Herbarium
Catalog #: YU.091933
Mrs. W. C. Simmons s.n.
Polyides rotunda (Hudson) Gaillon
United States, Rhode Island, Newport, Newport; Easton's Point, Newport, RI

University of Michigan
Catalog #: 667334
Mrs. W.C. Simmons #s.n.
Polyides rotunda (Hudson) Gaillon
United States, Rhode Island, Easton's Point, Newport

Michigan State University Algae
Catalog #: MSC0184124
Mrs. W.C. Simmons #s.n.
Polyides rotunda (Hudson) Gaillon
United States, Rhode Island, Newport, Easton's Point, Newport

Miami University - Algae
Catalog #: 000187485
Mrs. W.C. Simmons #s.n.
Polyides rotundus
United States, Rhode Island, Easton's Point, Newport