Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Sellaphora hohnii

Potapova and Ponader 2008

Sellaphora Hohni Guide
Credit: Marina Potapova
  1. Valves elliptic to linear-elliptic with subrostrate apices
  2. Grooves along each side of raphe ~1 μm wide
  3. Grooves covered by conopea
  4. Central area transversely rectangular or bow-tie shaped

Valves are elliptic to linear-elliptic with subrostrate apices; 28-47 μm long and 8.9-9.8 μm wide. The grooves are approximately 1 μm wide. The central area is transversely rectangular or bow-tie shaped and bordered by irregular, shortened striae. Striae are radiate, becoming convergent near the apices.