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Guide to Nupela carolina

Potapova and Clason in Potapova et al. 2003

Nupela Carolina Guide
Credit: Marina Potapova
  1. Raphe present on both valves
  2. Valves elliptical-lanceolate
  3. Striae unresolvable in LM

Valves elliptical-lanceolate. Raphe present on both valves. Axial area linear, narrow. Central area square or lyre-shaped, formed by interrupted central striae, often with several isolated areolae, appearing convex under LM. Transapical striae unresolvable in LM.