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Guide to Eunotia eruca

(Ehrenb.) Brightw. 1859

Eunotia Eruca Guide
Credit: David Burge
  1. Margins undulate
  2. Valves weakly arcuate
  3. Areolae distinct
  4. Raphe reduced

Both the ventral and dorsal valve margin is undulate. Valves are weakly arcuate. The striae are distinctly punctate and interrupted by a sternum, near the dorsal margin. The raphe is reduced, and is often not visible in LM.