Diatoms of North AmericaDiatoms of North America
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Guide to Brachysira subtilis

Potapova, Hamilton and Kopyrina 2014

Brachysira Subtilis Guide
  1. Valves linear-lanceolate
  2. Valve width < 4.5 μm
  3. Apices rounded
  4. Stria denisty > 32 in 10 μm

Valves are linear-lanceolate and less than 4.5 μm wide. The apices are rounded. The stria density is greater than 32 in 10 μm.