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Guide to Pinnularia clericii

(Freng.) Freng. 1933

Pinnularia clericii guide
  1. Valves with a gibbous center
  2. Axial area broad
  3. Central with four depressions
  4. Terminal raphe fissures sickle-shaped

The axial area is broad and linear. The central area is large and has four distinctive, shallow depressions. The raphe is lateral, with sickle-shaped terminal raphe fissures.

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