Navicula Pseudolanceolata Guide
Credit: Loren Bahls
  1. Valves lanceolate
  2. Apices protracted
  3. Apices with radiate or parallel striae
  4. Center valve with straight striae

Valves are lanceolate and 8-11 ┬Ám in width. Apices are narrow and protracted, except in small specimens. The striae near the apices are variable; they may be radiate or parallel. The striae near the center of the valve are straight, rather than bent.