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Tilden, Amer. Algae
Tilden, J.E. [1-650]
Field Museum of Natural History
Catalog #: C0528951F
Josephine E. Tilden #s.n. 01 June 1898
Cladophora arcta (Dillwyn) Kützing
United States, Washington, San Juan, Minnesota reef, two miles south of Friday Harbor, San Juan Island
Michigan State University Algae
Catalog #: MSC0181043
Josephine E. Tilden #s.n. 01 June 1898
Acrosiphonia arcta (Dillwyn) Gain
United States, Washington, San Juan, Minnesota Reef, two miles south of Friday Harbor, San Juan Island
Miami University - Algae
Catalog #: 000179549
Josephine E. Tilden #s.n. 01 June 1898
Acrosiphonia arcta (Dillwyn) Gain
United States, Washington, San Juan, Minnesota Reef, two miles south of Friday Harbor, San Juan Island
Butler University
Catalog #: 505055
Josephine E. Tilden #s.n. 01 June 1898
Spongomorpha arcta (Dillwyn) Kützing
United States, Washington, Minnesota Reef, two miles south of Friday Harbor, San Juan island