HAWRYSHYN, Jessica, Kathleen M. RÜHLAND, Matthew JULIUS, & John P. SMOL 2012 (April) Absence of evidence is not evidence of absence: is Stephanodiscus binderanus (Bacillariophyceae) an exotic species in the Great Lakes region? J. Phycol. 48(2): 270-274, 3 figs. Stephanodiscus binderanus has been present in North American Great Lakes region since late 17th century |