Lindavia Michiganiana Guide
Credit: Kalina Manoylov, David Burge
  1. Valve face tangentially undulate
  2. Depressed portion of valve ornamented
  3. Striae reduced in length near the raised portion of valve

Valves are tangentially undulate with ornamentation on the depressed portion. Alveolate striae cover roughly the outer 1/3 of the valve face, and are reduced in length on the raised portion of the valve.