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

Brown University - Algae
Catalog #: ABRU00004349
N. L. Gardner s.n.
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, California, San Pedro, CA

Field Museum of Natural History
Catalog #: C0512288F
N. L. Gardner #s.n. 00 October 1908
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, California, Los Angeles, San Pedro

University of Michigan
Catalog #: 662169
N.L. Gardner #s.n. 00 October 1908
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, California, Los Angeles, San Pedro

University of Michigan
Catalog #: 662172
N.L. Gardner #s.n. 00 October 1908
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, California, Los Angeles, San Pedro

Michigan State University Algae
Catalog #: MSC0184281
N.L. Gardner #s.n. 00 October 1908
Polysiphonia hendryi var. gardneri (Kylin) Hollenberg
United States, California, Los Angeles, San Pedro

Miami University - Algae
Catalog #: 000189073
N.L. Gardner #s.n. 00 October 1908
Polysiphonia hendryi var. gardneri (Kylin) Hollenberg
United States, California, Los Angeles, San Pedro

Yale University Herbarium
Catalog #: YU.094657
Nathaniel Lyon Gardner s.n.
Lophosiphonia obscura (C.Agardh) Falkenberg
United States, California, San Pedro, CA