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Guide to Sellaphora bacillum

(Ehrenb.) D.G.Mann 1989

Sellaphora Bacillum Guide
Credit: Pat Kociolek
  1. Valves linear-elongate
  2. Length 30-45 µm
  3. Axial area bordered by a distinct, hyaline conopeum

Valves are linear-elongate with apices rounded. The axial area is bordered by a distinct, hyaline conopeum. The striae are broadly spaced at the center of the valve and become much finer (to 22 in10 µm) at the ends.

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