Diatoms of North AmericaDiatoms of North America
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Guide to Sellaphora laevissima

(Kütz.) D.G.Mann 1989

Sellaphora Laevissima Guide
  1. Valves linear
  2. Central area bow-tie to rectangular
  3. Apices broadly rounded
  4. Narrow grooves run along raphe

Valves are linear. The central area is shaped like a bow-tie, to rectangular. The central area is bordered by 3-4 short striae. Apices are broadly rounded. Narrow grooves (edge of the conopeum) run alongside the raphe and appear as faint lines under LM.