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

Brown University - Algae
Catalog #: ABRU00004120
F. S. Collins s.n. 16 July 1906
Ralfsia clavata (Carmichael ex Harvey) P.L.Crouan & H.M.Crouan
United States, Maine, Cumberland, Harpswell; Harpswell, ME

University of Michigan
Catalog #: 638497
F.S. Collins #s.n. 16 July 1906
Ralfsia verrucosa (Areschoug) ??Areschoug
United States, Maine, Cumberland, Harpswell

University of Michigan
Catalog #: 638503
F.S. Collins #s.n. 16 July 1906
Ralfsia verrucosa (Areschoug) ??Areschoug
United States, Maine, Cumberland, Harpswell

Field Museum of Natural History
Catalog #: C0519845F
F.S. Collins #s.n. 16 July 1906
Ralfsia clavata f. laminariae F.S.Collins
United States, Maine, Cumberland, Harpswell

Michigan State University Algae
Catalog #: MSC0184950
F.S. Collins #s.n. 16 July 1906
Stragularia clavata (Harvey) G.Hamel
United States, Maine, Cumberland, Harpswell

Miami University - Algae
Catalog #: 000188460
F.S. Collins #s.n. 16 July 1906
Stragularia clavata (Harvey) G.Hamel
United States, Maine, Cumberland, Harpswell

Yale University Herbarium
Catalog #: YU.094428
Frank Shipley Collins s.n. 16 July 1906
Ralfsia clavata (Carmichael ex Harvey) P.L.Crouan & H.M.Crouan
United States, Maine, Cumberland, Harpswell; Harpswell, ME