additional sourceVan De Vijver, B.; Moravcova, A.; Kusber, W.-H.; Neustupa, J. (2013). Analysis of the type material of Pinnularia divergentissima (Grunow in Van Heurck) Cleve (Bacillariophyceae). <em>Fottea.</em> 13(1): 1–14., available online athttps://doi.org/10.5507/fot.2013.001[details] Available for editors