Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Frustulia quadrisinuata

Lange-Bert. 1996

Frustulia Quadrisinuata Guide
Credit: Carrie Graeff
  1. Apices protracted and moderately rounded
  2. Margins moderately undulate

The valve apices are protracted and moderately rounded. The valve margins are moderately undulate.