Navicula Trilatera Guide
Credit: Loren Bahls
  1. Valves linear-lanceolate
  2. Apices subrostrate
  3. Central area large, irregular

Navicula trilatera has linear-lanceolate valves 4.5-5.5 ┬Ám wide. Apices are subrostrate and the central area is moderately large and irregular.