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Guide to Eunotia perpusilla

(Grunow) Åke Berg 1939

Eunotia Perpusilla Guide
Credit: Ian Bishop
  1. Ventral margin with 2 subapical swellings
  2. Dorsal margin with 3-4 undulations
  3. Apices protracted, capitate and weakly recurved
  4. Striae radiate

Ventral margin is concave with two subapical swellings. Dorsal margin is convex with 3-4 undulations. Apices are protracted, capitate and weakly recurved. Striae are radiate and evenly spaced.