On the identity of the rare Fragilaria subconstricta (Fragilariaceae), with Fragilaria species forming ribbon-like colonies shortly reconsidered
D. Heudre, C. E. Wetzel, L. Moreau, B. Van de Vijver, and L. Ector
Plant Ecology and Evolution, vol. 152, no. 2, pp. 327-339, 2019