Figures 60-65 from: Liu B, Williams DM (2020) From chaos to order: the life history of Hannaea inaequidentata (Lagerstedt) Genkal and Kharitonov (Bacillariophyta), from initial cells to vegetative cells. PhytoKeys 162: 81-112. https://doi.org/10.3897/phytokeys.162.56136

Figures 60-65 Hannaea inaequidentata, normal vegetative valves, external view, SEM60 displaced frustule 61 detail of Fig. 60, showing well-developed virgae and vimines (arrows), spines mostly located between two adjacent virgae, sometimes situated on virgae (arrowheads) 62, 63 apex details of Fig. 62 showing rimoportula configuration in two valves forming a cell: each cell with two rimoportulae, located diagonally at both apices of each cell (two arrows, respectively) 64, 65 another two apices showing a regular ocellulimbus and areolae occluded internally by hymens. Scale bars: 10 μm (60), 2 μm (61–63), 1 μm (64, 65).