Anomoeoneis Sphaerophora Rostrata Guide
  1. Valves lanceolate
  2. Valves 11-16 µm wide
  3. Apices rostrate to subrostrate
  4. Central area asymmetric
  5. Areolae spacing highly variable

Valves are lanceolate with rostrate to subrostrate apices. Valves 11-16 µm wide. Central area asymmetric and variable in size. Lateral spacing of areolae highly variable except near the valve margins.