Navicula Virid Neomun Guide
Credit: Marina Potapova
  1. Valves linear
  2. Apices wedge-shaped
  3. Valves 10-12.2 μm wide
  4. Central nodule asymmmetric
  5. External proximal raphe ends bent towards primary side

Valves are linear with wedge-shaped apices. The central area is asymmetric, trapezoid on primary side, semi-circular on secondary side. External proximal raphe ends are bent towards primary side of the valve. The central nodule is asymmetrically expanded to the primary side. Areolae are visible under LM, 22-26 in 10 μm.