The morphology of F. radians A6 valve cells in 2018 (after seven years of culture isolation). Abnormalities are numbered according to Table 1.

 
 
  Part of: Petrova DP, Bedoshvili YD, Zakharova YR, Volokitina NA, Likhoshway YV, Grachev MA (2020) Changes in valve morphology of two pennate diatom species during long-term culture. Acta Biologica Sibirica 6: 669-678. https://doi.org/10.3897/abs.6.e57888