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

Brown University - Algae
Catalog #: ABRU00004491
C. Bullard s.n. 15 March 1909
Gonatozygon brebissonii var. laeve (Hilse) West & G.S.West
United States, Massachusetts, Middlesex Fells, MA

Yale University Herbarium
Catalog #: YU.094962
Charles Bullard s.n. 15 March 1909
Gonatozygon brebissonii var. laeve (Hilse) West & G.S.West
United States, Massachusetts, Middlesex, Medford; Middlesex Fells, MA

University of Michigan
Catalog #: 736284
Charles Bullard #s.n. 15 March 1909
Gonatozygon brebissonii De Bary
United States, Massachusetts, Middlesex, Middlesex Fells

University of Michigan
Catalog #: 736286
Charles Bullard #s.n. 15 March 1909
Gonatozygon brebissonii De Bary
United States, Massachusetts, Middlesex, Middlesex Fells

Michigan State University Algae
Catalog #: MSC0182842
Charles Bullard #s.n. 15 March 1909
Gonatozygon brebissonii De Bary
United States, Massachusetts, Middlesex, Middlesex Fells

Miami University - Algae
Catalog #: 000210572
Charles Bullard #s.n.
Gonatozygon brebissonii De Bary
United States, Massachusetts, Middlesex, Middlesex Fells