COCQUYT, Christine, & Regine JAHN 2007 (May) Surirella nyassae O. Müller, S. malombae O. Müller and S. chepurnovii Cocquyt & R. Jahn sp. nov. (Bacillariophyta) — typification and variability of three closely related East African diatoms Nova Hedwigia 84(3/4): 529-548, 47 figs., 1 table |