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

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0033359
Setchell, W. A. #s.n. 08 June 1906
Ptilota Densa C.Agardh
United States, California, San Mateo, Moss Beach, near Halfmoon Bay, San Mateo County, California

Brown University - Algae
Catalog #: ABRU00004070
W. A. Setchell s.n. 08 June 1906
Ptilota densa C.Agardh
United States, California, San Mateo, Moss Beach, near Halfmoon Bay, CA

Field Museum of Natural History
Catalog #: C0516292F
W. A. Setchell #s.n. 08 June 1906
Ptilota densa C.Agardh
United States, California, San Mateo, Moss Beach, near Halfmoon Bay

University of Michigan
Catalog #: 663816
W.A. Setchell #s.n. 08 June 1906
Neoptilota densa (C.Agardh) Kylin ex I.A.Abbott & Hollenberg
United States, California, San Mateo, Moss Beach, near Halfmoon Bay

Michigan State University Algae
Catalog #: MSC0183612
W.A. Setchell #s.n. 08 June 1906
Neoptilota densa (C.Agardh) Kylin ex I.A.Abbott & Hollenberg
United States, California, San Mateo, Moss Beach, near Halfmoon Bay

Miami University - Algae
Catalog #: 000188347
W.A. Setchell #s.n. 08 June 1906
Neoptilota densa (C.Agardh) Kylin ex I.A.Abbott & Hollenberg
United States, California, San Mateo, Moss Beach, near Halfmoon Bay

Yale University Herbarium
Catalog #: YU.094378
William Albert Setchell s.n. 08 June 1906
Ptilota densa C.Agardh
United States, California, San Mateo, Moss Beach, near Halfmoon Bay, CA