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

Brown University - Algae
Catalog #: ABRU00003719
E. Butler s.n.
Microspora tumidula Hazen
Canada, Alberta, Warm Sulphur Springs, Banff, Canada

Michigan State University Algae
Catalog #: MSC0183520
E. Butler #s.n. 00 June 1901
Microspora tumidula Hazen
Canada, Alberta, Warm Sulphur Springs, Banff

Yale University Herbarium
Catalog #: YU.092108
Eloise Butler s.n.
Microspora tumidula Hazen
Canada, Alberta, Warm Sulphur Springs, Banff

University of Michigan
Catalog #: 730132
Eloise Butler #s.n. 00 June 1901
Microspora tumidula Hazen
Canada, Alberta, Warm Sulphur Springs, Banff

University of Michigan
Catalog #: 730134
Eloise Butler #s.n. 00 June 1901
Microspora tumidula Hazen
Canada, Alberta, Warm Sulphur Springs, Banff

Miami University - Algae
Catalog #: 000188002
Eloise Butler #s.n. 00 June 1901
Microspora tumidula Hazen
Canada, Alberta, Warm Sulphur Springs, Banff