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Alexson, E. E.; Reavie, E. D.; Van de Vijver, B.; Wetzel, C. E.; Ector, L.; Wellard Kelly, H. A.; Aliff, M. N.; Estepp, L. R. (2022). Revision of the needle-shaped Fragilaria species (Fragilariaceae, Bacillariophyta) in the Laurentian Great Lakes (United States of America, Canada). Journal of Great Lakes Research. 48(4): 999-1020.