Hannaea inaequidentata, normal vegetative valves, LM 48–59 12 valves showing diminution series, note slightly arcuate, lanceolate valve outlines, and largest valve (48) 4× longer than smallest (59).

 
 
  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