Hannaea inaequidentata, pre-normal vegetative valves, internal view, SEM 125 twisted and rounded valve 126 arcuate valve with swollen middle part 127 valve with sternum and swollen middle part 128 valve with bi-constricted middle part and sternum 129 slightly arcuate valve with parallel middle part and sternum 130 nearly normal valve. Scale bars: 20 μm (125–130).

 
 
  Part of: 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