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Guide to Aulacoseira canadensis

(Hust.) Simonsen 1979

Aulacoseira Canadensis Guide
Credit: Loren Bahls
  1. Ratio of mantle height to valve diameter >1
  2. Rows of mantle areolae straight
  3. Mantle areolae large and square or oblong
  4. Spines of one size

Valves are 5-16 µm in diameter, with a mantle height of 13-22 µm. Mantle areolae are large and square or oblong in shape and arranged in straight rows. Spines of one size.