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Guide to Stauroneis thermicola

(J.B.Petersen) J.W.G.Lund 1946

Stauroneis Thermicola Guide
  1. Variably small, linear-lanceolate
  2. Apices variably constricted
  3. Striae adjacent to stauros parallel, all others radiate and curved
  4. Increasing stria density from mid-valve to apex
  5. Raphe straight and filiform

Valves linear-lanceolate with protracted, subrostrate to capitate rounded ends. Striae adjacent to the stauros are parallel, and the rest are curved and radiate, increasing in density from mid-valve to apex. Raphe is straight and filiform, with inflated proximal ends.

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