Collins, Holden & Setchell, Phycoth. Bor.-Amer.Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]
Brown University - Algae
N. L. Gardner s.n.
Spirogyra dubia var. longiarticulata Kützing
Canada, British Columbia, Oak Bay, Victoria, BC, Canada
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University of Michigan
N.L. Gardner #s.n. 00 May 1901
Spirogyra dubia Kützing
Canada, British Columbia, Oak Bay, Victoria
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Michigan State University Algae
N.L. Gardner #s.n. 00 May 1901
Spirogyra dubia Kützing
Canada, British Columbia, Oak Bay, Victoria
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Miami University - Algae
N.L. Gardner #s.n. 00 May 1901
Spirogyra dubia var. longiarticulata Kützing
Canada, British Columbia, Oak Bay, Victoria
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Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00147779
2ef8cc7f-2763-4104-a137-423e79b99e25
N.L. Gardner #s.n. 00 May 1901
Spirogyra dubia K
Canada, British Columbia, Oak Bay, Victoria
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Yale University Herbarium
Nathaniel Lyon Gardner s.n.
Spirogyra dubia Kützing
Canada, British Columbia, Oak Bay, Victoria
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