Diatoms of North AmericaDiatoms of North America
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Guide to Geissleria cascadensis

(Sovereign) Stancheva and S.A.Spauld. 2019

Navicula Cascadensis Guide
Credit: Loren Bahls
  1. Valves elliptic
  2. Annulae consist of 2-4 pairs of striae
  3. Areolae distinct

Valves are elliptic, with cuneate apices. Areolae are coarse and distinct in LM. An annulus consisting of two to four pairs of striae is present at each apex.