Mixed striae and poroids of girdle bands in Ulnaria gaowangjiensis, SEM A a frustule B–D mixed striae in mantle (arrows), isolated poroids in second band (B2, arrowheads), and two rows of poroids in third band (B3, wavy arrows). Scale bars: 10 μm (A); 2 μm (B–D).

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