Diatoms of North AmericaDiatoms of North America
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Guide to Stauroneis terryi

D.B. Ward ex T.C. Palmer 1910

Stauroneis terryi guide
  1. Valves very large
  2. Valve apices with prominent pseudosepta
  3. Stauros bow-tie shaped
  4. Striae strongly radiate

Valves are large, rhombic-lanceolate and very slightly gibbous in the middle. The valve apices are acute, with large and thick pseudosepta. The raphe is straight with external slit slightly curved in its proximal part. The stauros is bow-tie shaped. The striae are radiate. The girdle bands bear large septa.