Pulchellophycus schwabei guide
  1. Apices rostrate to subrostrate
  2. Marginal pores large
  3. Raphe linear, simple
  4. Striae unresolvable in LM

Valves are small and linear, with rostrate to subrostrate apices. Large, distinctive marginal pores are present. The axial area is narrow and the raphe is linear and simple. Striae are not resolvable in LM.