Cyclotella Praetermissa Guide
Credit: Loren Bahls
  1. Valve face nearly flat
  2. Central area with many uniform-sized areolae
  3. Central areolae scattered or arranged in weakly radiate rows
  4. Marginal striae short, with shadow lines

Valves are nearly flat valves and a central area consisting of many uniform-sized areolae. The central areolae are scattered or arranged in weakly radiate rows. Marginal striae are short and have shadow lines.