Navicula Radiosa Guide
Credit: Marina Potapova
  1. Valves narrow lanceolate
  2. Valves 8.8-11.2 μm wide
  3. Apices acutely rounded
  4. Central area rhombic
  5. Central striae strongly radiate

The valves are narrow and lanceolate with acutely rounded ends. The central area is rhombic. The striae are strongly radiate. Striae are bent in the valve center and convergent near the poles. Lineolae number 28-32 in 10 μm.