Sellaphora Auldreekie Guide
  1. Valves lanceolate-elliptic
  2. Apices rostrate
  3. Central area bow-tie shaped
  4. Striae at the central area equal length
  5. Polar bars reflexed

Valves lanceolate-elliptic, with protracted rostrate apices. Central area is asymmetric and bow-tie shaped, bordered by short striae with "even" proximal ends. The polar bars are prominent and reflexed.