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Guide to Navicula canalis

R.M.Patrick 1944

Navicula Canalis Guide Copy
  1. Apices protracted, rostrate
  2. Areolae somewhat coarse and distinct
  3. Central area asymmetric

Valves are small and lanceolate with protracted apices. The central area is asymmetric; it is barely differentiated from the axial area on one side of the valve, but enlarged on the other side. The areolae are coarse and distinct in LM. The striae are radiate at the center and parallel, or convergent, at the apices. The space between each stria is more broad than the width of the stria.

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