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Tiffany, L. H., and Britton, M. E. 1944. Freshwater Chlorophyceae and 

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Tiffany, L. H., and Transeau, E. N. 1927. Oedogonium periodicity in the 

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Tilden, Josephine E. 1895. List of freshwater algae collected in Minnesota 

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TiMBERLAKE, H. G. 1902.** Development and structure of the swarmspores of 

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Transeau, E. N. 1913. The periodicity of algae in Illinois. Trans. Amer. 

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 Amer. Jour. Bot., 25(7): 524-528; Figs. 1-19. 1943. Two new Ulotrichales. 



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