Diatoms of North AmericaDiatoms of North America
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Guide to Surirella lacrimula

J.D. English 2012

Surirella lacrimula guide
  1. Valves ovate
  2. Keel low, alar wings absent
  3. Fibulae 6-8 in 10 μm
  4. Striae 27-33 in 10 μm

Valves are ovate, 19–30 μm long, 10–13 μm wide. The keel is low without alar wings. Striae are fine. Fibulae number 6–8 in 10 μm.