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

Brown University - Algae
Catalog #: ABRU00003847
F. S. Collins s.n. 31 August 1902
Porphyra laciniata f. umbilicalis (Kützing) Kleen
United States, Maine, Cumberland, Harpswell; Eagle Island, Casco Bay, ME

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0017210
F.S. Collins #1136 31 August 1902
Porphyra umbilicalis Kützing
United States, Maine, Hancock, Eagle Island, Casco Bay

Field Museum of Natural History
Catalog #: C0503340F
F.S. Collins #s.n. 31 August 1902
Porphyra laciniata f. umbilicalis (Kützing) Kleen
United States, Maine, Cumberland, Eagle Island, Casco Bay

University of Michigan
Catalog #: 669138
F.S. Collins #s.n. 31 August 1902
Porphyra umbilicalis Kützing
United States, Maine, Cumberland, Eagle Island, Casco Bay

University of Michigan
Catalog #: 669169
F.S. Collins #s.n. 31 August 1902
Porphyra umbilicalis Kützing
United States, Maine, Cumberland, Eagle Island, Casco Bay

Michigan State University Algae
Catalog #: MSC0184339
F.S. Collins #s.n. 31 August 1902
Porphyra laciniata f. umbilicalis (Kützing) Kleen
United States, Maine, Cumberland, Eagle Island, Casco Bay

Miami University - Algae
Catalog #: 000188128
F.S. Collins #s.n.
Porphyra laciniata f. umbilicalis (Kützing) Kleen
United States, Maine, Cumberland, Eagle Island, Casco Bay

Yale University Herbarium
Catalog #: YU.092219
Frank Shipley Collins s.n. 31 August 1902
Porphyra laciniata C.Agardh
United States, Maine, Cumberland, Harpswell; Eagle Island, Casco Bay, ME