Figures 103-106 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 103-106 Hannaea inaequidentata, half mother frustule, external view, SEM103 half mother frustule, note its rounded outline 104 middle detail of Fig. 103 showing longitudinal perizonium (arrows) and plaques (arrowheads) 105 apex detail of Fig. 103106 apex detail of Fig. 103 showing four girdle bands and hypovalve with spines (arrows). Scale bars: 10 μm (103), 2 μm (104–106)