Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Eunotia exigua

(Bréb. in Kütz.) Rabenh. 1864

Eunotia Exigua Guide
Credit: Paula Furey
  1. Ventral margin concave
  2. Dorsal margin convex
  3. Apices protracted and dorsally reflexed
  4. Distal raphe curves onto valve face

Ventral margin is concave. In smaller specimens the ventral margin is slightly concave or straight. Dorsal margin is strongly convex. Apices are protracted, and frequently strongly dorsally reflexed. Apices of shorter specimens are more obtusely rounded. Distal raphe end curves a short distance on to the valve face.