Sellaphora Disjuncta Guide2
  1. Valves linear-lanceolate
  2. Apices subcapitate
  3. Striae radiate at center valve
  4. Striae parallel at ends

Valves are slender and linear-lanceolate, with subcapitate ends. The ends are more narrow than the valve center. The central area is bow-tie in shape. Striae are radiate at the center valve, becoming slightly radiate to parallel at the apices.