Diatoms of North AmericaDiatoms of North America
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Guide to Neidium fossum

Lefebvre and P.Ham. 2015

Neidium fossum guide3
  1. Valves moderately large
  2. Valve margins convex
  3. Proximal raphe ends variable in length and curvature
  4. Striae number 17-20 in 10 µm

Valves are moderately large, with convex margins. Proximal raphe ends are variable in length and curvature. Striae number 17-20 in 10 µm.