Nitzschia Perminuta Guide
Credit: Pat Kociolek
  1. Valves linear to linear-lanceolate
  2. Apices protracted to rounded
  3. Fibulae 11-13 in 10 µm
  4. Striae finely punctate

Valves are linear to linear-lanceolate, with parallel margins. The distal valve tapers abruptly to form slightly protracted to rounded apices. Striae are finely punctate. Fibulae are 11-13 in 10 µm.