Cymbella Subleptoceros Guide
Credit: Loren Bahls
  1. Valves lanceolate
  2. Valves <10 µm wide
  3. Striae 9-13 in 10 µm
  4. Areolae 20-24 in 10 µm

Valves are lanceolate and less than 10 µm wide. Striae number 9-13 in 10 µm and areolae number 20-24 in 10 µm. Stigmata are absent.