Diatoms of North AmericaDiatoms of North America
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Guide to Stephanocyclus quillensis

(L.W.Bailey) Avendaño et al. 2023

Cyclotella Quillensis Guide
  1. Valves large
  2. Valve face tangentially undulate
  3. Central fultoportulae numerous
  4. Striae multiseriate

Valves are large, with a tangentially undulate valve face. The central area covers 4/5 of the valve face. Numerous central fultoportulae are present. Striae are multiseriate.