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

Brown University - Algae
Catalog #: ABRU00004401
W. A. Setchell s.n.
Ptilota pectinata (Gunnerus) Kjellman
United States, California, Monterey, CA

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0017259
W. A. Setchell #1649
Ptilota serrata Kützing
United States, California, Monterey

Field Museum of Natural History
Catalog #: C0516229F
W. A. Setchell #s.n.
Ptilota pectinata (Gunnerus) Kjellman
United States, California, Monterey, Monterey

University of Michigan
Catalog #: 670256
W.A. Setchell #s.n.
Ptilota pectinata (Gunnerus) Kjellman
United States, California, Monterey, Monterey

University of Michigan
Catalog #: 670262
W.A. Setchell #s.n.
Ptilota pectinata (Gunnerus) Kjellman
United States, California, Monterey, Monterey

Michigan State University Algae
Catalog #: MSC0184372
W.A. Setchell #s.n.
Ptilota filicina J.Agardh
United States, California, Monterey, Monterey

Miami University - Algae
Catalog #: 000189124
W.A. Setchell #s.n. 22 August 2015
Ptilota filicina J.Agardh
United States, California, Monterey, Monterey

Yale University Herbarium
Catalog #: YU.094710
William Albert Setchell s.n.
Ptilota pectinata (Gunnerus) Kjellman
United States, California, Monterey, Monterey; Monterey, CA