Navicula Escambia Guide Copy
  1. Areolae coarse, distinct
  2. Central area asymmetric
  3. Valve width 6.3-9.1 µm
  4. Apices broadly rounded or wedge-shaped

Valves are robust, linear-elliptic with broadly rounded or wedge-shaped apices. The lineolate striae are composed of coarse, distinct areolae. The central area is prominent and asymmetrically rounded. Valves are 6.1-9.1 µm wide.