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Guide to Navicula subrostellata

Hust. 1955

Navicula Subrostellata Guide
Credit: Marina Potapova
  1. Valves lanceolate to linear-lanceolate with protracted apices
  2. Central area round
  3. External proximal raphe ends straight
  4. Central striae straight, slightly radiate
  5. Areolae clearly visible under LM

Valves are lanceolate to linear-lanceolate with protracted apices. The central area is round. Proximal raphe ends are straight and close. Striae are straight, slightly radiate around the center, becoming parallel then convergent at the apices. The areolae are clearly visible under LM, 23-26 in 10 μm.