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

Brown University - Algae
Catalog #: ABRU00004292
F. S. Collins s.n. 19 July 1904
Petrocelis middendorfii (Ruprecht) Kjellman
United States, Maine, Cumberland, Harpswell; Jaquish Island, Casco Bay, ME

Field Museum of Natural History
Catalog #: C0516649F
F. S. Collins #s.n. 19 July 1904
Petrocelis middendorfii (Ruprecht) Kjellman
United States, Maine, Cumberland, Jaquish Island, Casco Bay

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00220379
2436f1bc-d3cb-41cc-8207-9c0f82a03792
F. S. Collins #s.n. 19 July 1904
Petrocelis middendorfii (Ruprecht) Kjellman
United States, Maine, Hancock, Jaquish Island, Casco Bay

University of Michigan
Catalog #: 665864
F.S. Collins #s.n. 19 July 1904
Petrocelis middendorfii (Ruprecht) Kjellman
United States, Maine, Cumberland, Jaquish Island, Casco Bay

University of Michigan
Catalog #: 665868
F.S. Collins #s.n. 19 July 1904
Petrocelis middendorfii (Ruprecht) Kjellman
United States, Maine, Cumberland, Jaquish Island, Casco Bay

Michigan State University Algae
Catalog #: MSC0183381
F.S. Collins #s.n. 19 July 1904
Mastocarpus stellatus (Stackhouse) Guiry
United States, Maine, Hancock, Jaquish Island, Casco Bay

Miami University - Algae
Catalog #: 000188679
F.S. Collins #s.n. 19 July 1904
Mastocarpus stellatus (Stackhouse) Guiry
United States, Maine, Hancock, Jaquish Island, Casco Bay

Yale University Herbarium
Catalog #: YU.094599
Frank Shipley Collins s.n. 19 July 1904
Petrocelis middendorfii (Ruprecht) Kjellman
United States, Maine, Cumberland, Harpswell; Jaquish Island, Casco Bay, ME