Kobayasialla Subtilissima Guide
Credit: Loren Bahls
  1. Valves 5.1-6.0 µm wide
  2. Valve length-to-width ratio 4.0 to 4.7
  3. Longitudinal lines absent

Kobayasiella subtilissima has linear-lanceolate valves 5.1 to 6.0 µm wide and a length-to-width ratio of 4.0 to 4.7. Distinct longitudinal lines are absent.