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Guide to Navicula duerrenbergiana

Hust. in A.Schmidt et al. 1934

Navicula Duerrenburgiana Guide
Credit: Loren Bahls
  1. Frustules weakly silicified
  2. Valves narrow linear-lanceolate
  3. Apices pointed
  4. Striae finely lineate
  5. Central area absent

Navicula duerrenbergiana has weakly silicified frustules that are easy to overlook in strewn mounts. Valves are narrow linear-lanceolate with pointed apices. The striae are finely lineate and weakly radiate throughout. The proximal raphe ends are very close and not expanded. Central area is absent.

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