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

Brown University - Algae
Catalog #: ABRU00004207
F. S. Collins s.n. 22 September 1907
Endoderma wittrockii (Wille) De Toni
United States, Massachusetts, Eastham, MA

University of Michigan
Catalog #: 621408
F.S. Collins #s.n. 22 September 1907
Endoderma wittrockii (Wille) De Toni
United States, Massachusetts, Barnstable, Eastham

University of Michigan
Catalog #: 727822
F.S. Collins #s.n. 22 September 1907
Endoderma wittrockii (Wille) De Toni
United States, Massachusetts, Barnstable, Eastham

Michigan State University Algae
Catalog #: MSC0185200
F.S. Collins #s.n. 22 September 1907
Ulvella wittrockii (Wille) R.Nielsen, C.J.O'Kelly & B.Wysor
United States, Massachusetts, Barnstable, Eastham

Miami University - Algae
Catalog #: 000188542
F.S. Collins #s.n.
Ulva wittrockii
United States, Massachusetts, Barnstable, Eastham

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00200171
bb882288-b420-4ed5-8143-c48ed459eada
F.S. Collins #s.n. 22 September 1907
Endoderma wittrockii (Wille) De Toni
United States, Massachusetts, Barnstable, Eastham

Yale University Herbarium
Catalog #: YU.094514
Frank Shipley Collins s.n. 22 September 1907
Endoderma wittrockii (Wille) De Toni
United States, Massachusetts, Barnstable, Eastham; Eastham, MA