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Guide to Eunotia incisa

W.Sm. ex W.Greg. 1854

Eunotica Incisa Guide
Credit: Paula Furey
  1. Ventral margin straight to weakly concave
  2. Dorsal margin convex
  3. Apices acutely rounded
  4. Helictoglossae equidistant from the ends
  5. Distal raphe on valve mantle

The ventral margin of Eunotia incisa is straight to weakly concave. The dorsal margin is convex. The apices are acutely rounded, appearing 'nose-like' due to the inset position of the helictoglossae which are set in equidistant from the ends (symmetric to the transapical axis). The distal ends of the raphe lie on the valve mantle and terminal raphe nodules are well set in from the apices.