Hannaea cf. baicalensis, SEM. 29–32, 34 details of cingulum 33 central area of valve, internal view, note buttressed central area. Scale bar: 2 μm (29–34).

 
 
  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