FIGURES 62–65. Navicula flandriae Van de Vijver & A.Mertens, sp. nov., SEM. Type population from Leopoldkanaal. 62. External view of an entire valve showing the raphe structure and the striae. 63. External detail of the apex with the typical hooked distal raphe ending. 64. External detail of the central area. Note the typical weakly deflected proximal raphe endings. 65. Internal detail of the central area showing the typical areola coverings, the proximal raphe endings and the laterally running raphe branches. Scale bar = 10 μm (Figs 62, 63), 5 μm (Figs 64, 65).

Published as part of Beauger, Aude, Voldoire, Olivier, Mertens, Adrienne, Cohu, René Le & Vijver, Bart Van De, 2015, Two new Navicula species (Bacillariophyceae) from Western Europe, pp. 172-182 in Phytotaxa 230 (2) on page 178, DOI: 10.11646/phytotaxa.230.2.4, http://zenodo.org/record/13630744