Cymbella Compacta Guide
Credit: Loren Bahls
  1. Apices not protracted
  2. Central area small
  3. Elongated ventral areolae 4-8
  4. Proximal raphe ends ventrally deflected

Valves have rounded apices that are not protracted. The central area is small or absent. Four to eight elongated areaolae are present on the median ventral striae. Proximal raphe ends are hooked toward the ventral margin.