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Van De Vijver, B., Kusber, W-H., Ector, L., Schuster, T.M. & Walter, J. (2020). Original material of Fragilaria gloiophila (Grunow) Van de Vijver, Ector, T.M.Schuster & J.Walter (Fragilariaceae, Bacillariophyta) rediscovered in the Grunow collection. Notulae algarum. 161: 1-3.