Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Tryblionella apiculata

W.Greg. 1857

Tryblionella Apiculata Guide
Credit: Marge Penton
  1. Valves constricted at central margin
  2. Apices apiculate to sub-capitate
  3. Longitudinal fold present
  4. Fibulae aligned with striae

Valves are constricted in the middle on both sides of valve. The apices are apiculate to subcapitate. A longitudinal fold present, forming a hyaline area. Fibulae and striae are equal in number and aligned with one another.