Figures 107-112 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 107-112 Hannaea inaequidentata, pre-normal frustules, external view, SEM107 frustule with arcuate outline and swollen middle 108 frustule with developed sternum 109 frustule with bi-constricted middle and developed sternum 110 frustule with globular middle and developed sternum 111 twisted frustule with developed sternum 112 frustule with distinct virgae and developed sternum. Scale bars: 20 μm (107–112).