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Guide to Navicula volcanica

Bahls and Potapova 2015

Navicula Ludloviana Guide
Credit: Loren Bahls
  1. Striae strongly radiate throughout
  2. Axial area broad
  3. Raphe distinctly bowed
  4. Striae finely lineolate and broad
  5. Proximal raphe ends expanded

Valves are large. The axial area widens near mid-valve. The central area is rhombic. The raphe branches are distinctly bowed and the proximal ends are large and bulbous. The striae are lineolate and strongly radiate throughout.

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