Farlow, Anderson & Eaton, Algae Exs. Amer. Bor.
Farlow, W.G.; Anderson, C.L.; Eaton, D.C. [1 - 230]

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00212271
f732171b-05f5-43eb-ac89-5ea498681172
F. S. Collins #214
Ulothrix flacca (Dillwyn) Thuret
United States, Massachusetts, Middlesex, Mystic River, Malden

San Diego Natural History Museum - Algae
Catalog #: SD00001727
F. S. Collins #s.n.
Ulothrix flacca (Dillwyn) Thuret
United States, Massachusetts, Middlesex, Mystic River, Malden

University of Michigan
Catalog #: 733067
F.S. Collins #s.n.
Ulothrix flacca (Dillwyn) Thuret
United States, Massachusetts, Middlesex, Mystic River, Malden

Yale University Herbarium
Catalog #: YU.095800
Frank Shipley Collins s.n.
Ulothrix flacca (Dillwyn) Thuret
United States, Massachusetts, Middlesex, Mystic River, Malden