Cymbella Blinni Guide
Credit: Loren Bahls
  1. Valves <12 μm wide
  2. Areolae 22-30 in 10 μm
  3. Striae 10-15 in 10 μm
  4. Stigmata ventral, 1-5

Valves are dorsiventral and less than 12 μm wide. Areolae number 22-30 in 10 μm. Striae number 10-15 in 10 μm. There are 1 to 5 isolated stigmata on the ventral side of the central nodule.