Neidiopsis Hamiltonii Guide
Credit: Loren Bahls
  1. Valves lanceolate
  2. Apices subcapitate
  3. Proximal raphe ends straight
  4. Central area small

Valves are lanceolate, with convex margins that lack undulations. Apices are subcapitate. The proximal raphe ends are straight and placed relatively close to one another. The central area is small.