Diatoms of North AmericaDiatoms of North America
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Guide to Cymbellafalsa

Lange-Bert. and Metzeltin 2009

Cymbellafalsa guide3
  1. Valves weakly asymmetric about the apical and/or transapical axis
  2. Apical porefields present on both ends

Valves are symmetric to weakly asymmetric to one or both of the transapical and/or apical axis. The raphe is filiform and straight. Central raphe ends deflect to the primary side, while the distal ends deflect to the secondary side. Areolae are uniseriate. Both valve ends exhibit an apical porefield which may visible in LM.