Ulnaria oxybiseriata, ×630, LM A, B living cells in girdle view, note numerous irregular chromatophores C–F four living cells in valve view, note numerous discoid chromatophores. Scale bar: 20 μm.

 
 
  Part of: Liu B (2023) The diatom genus Ulnaria (Bacillariophyta) in China. PhytoKeys 228: 1-118. https://doi.org/10.3897/phytokeys.228.101080