Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Surirella undulata

Ehrenb. 1845

Iconella Undulata Guide
  1. Valves isopolar, elliptic to lanceolate
  2. Transapical undulations
  3. Fibulae distinct
  4. Apex rounded to apiculate

Valves are isopolar and elliptic to lanceolate, with transapical undulations on the valve face. Distinct fibulae are visible along the valve margin. Apices are rounded to apiculate.