Discostella Pseudostelligera Guide
Credit: Rex Lowe
  1. Valves extremely small
  2. Central valve flat, concave or convex
  3. Central ornamentation present or absent
  4. Marginal fultoportulae evident
  5. Fultoportulae may possess projecting tubes and/or hoods

Valves are extremely small, less than 10 ┬Ám in diameter. The central valve may be flat, concave or convex. Ornamentation in the central valve may be absent, or there may be a stellate ornamentation. Marginal fultoportulae are evident in LM. These fultoportulae may possess externally projecting tubes and/or hoods.