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

Miami University - Algae
Catalog #: 000186754
J.M. Weeks #s.n. 02 January 1897
Platythamnion heteromorphum (J.Agardh) J.Agardh
United States, California, Monterey, Carmel Bay

Brown University - Algae
Catalog #: ABRU00002937
Mrs. J. M. Weeks s.n. 02 January 1897
Platythamnion heteromorphum (J.Agardh) J.Agardh
United States, California, Monterey, Carmel Bay, Monterey, CA

Yale University Herbarium
Catalog #: YU.091425
Mrs. J. M. Weeks s.n. 02 January 1897
Platythamnion heteromorphum (J.Agardh) J.Agardh
United States, California, Monterey, Carmel Bay, CA

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00220514
92251dee-0040-4d9b-a231-81cfc3b2d4f3
Mrs. J. M. Weeks; W. A. Setchel #s.n. 02 January 1897
Platythamnion heteromorphum (J.Agardh) J.Agardh
United States, California, Monterey, Carmel Bay

University of Michigan
Catalog #: 666559
Mrs. J.M. Weeks #s.n. 02 January 1897
Platythamnion recurvatum E.M.Wollaston
United States, California, Monterey, Carmel Bay

Michigan State University Algae
Catalog #: MSC0184238
Mrs. J.M. Weeks #s.n. 02 January 1897
Pterothamnion heteromorphum (J.Agardh) Athanasiadis & Kraft
United States, California, Monterey, Carmel Bay