Climacosphenia elegantissima sp. nov., (GU52AI-1 except B from GU52U-2) A, D living cell, showing extreme length and location of nucleus (arrow) B acid-cleaned complete valvocopula, emphasizing the very long, narrow stem C portion of colony, showing cells attached to mucilage stalk; the two cells to right of middle are 1300 µm long E detail of mucilage stalk with bases of attached cells. Scale bars: 250 µm (A–C); 50 µm (D, E).

 
 
  Part of: Lobban CS, Ashworth MP, Camacho T, Lam DW, Theriot EC (2022) Revision of Ardissoneaceae (Bacillariophyta, Mediophyceae) from Micronesian populations, with descriptions of two new genera, Ardissoneopsis and Grunowago, and new species in Ardissonea, Synedrosphenia and Climacosphenia. PhytoKeys 208: 103-184. https://doi.org/10.3897/phytokeys.208.89913