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

Brown University - Algae
Catalog #: ABRU00003815
E. Butler s.n.
Phormidium valderianum Gomont
Canada, Alberta, Banff, AB, Canada

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0012546
E. Butler #1105 00 June 1901
Leptolyngbya valderiana (Gomont) Anagnostidis & Komárek
Canada, Alberta, Banff

Michigan State University Algae
Catalog #: MSC0183270
E. Butler #s.n.
Leptolyngbya valderiana (Gomont) Anagnostidis & Komárek
Canada, Alberta, Banff, AB, Canada

Miami University - Algae
Catalog #: 000188094
E. Butler #s.n. 01 June 2015
Leptolyngbya valderiana (Gomont) Anagnostidis & Komárek
Canada, Alberta, Banff, AB, Canada

Yale University Herbarium
Catalog #: YU.092188
Eloise Butler s.n.
Phormidium valderianum Gomont
Canada, Alberta, Banff