Diatoms of North AmericaDiatoms of North America
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Guide to Fallacia tenera

(Hust.) D.G.Mann in Round et al. 1990

Fallacia Tenera2 Guide
  1. Valves linear-elliptic to elliptic
  2. Striae composed of distinct areolae
  3. Areolae adjacent to the raphe branches are well developed on one side
  4. Hyaline area narrow, lanceolate, lyre-shaped

Valves linear-elliptic to elliptic. Striae are composed of distinct areolae. A narrow, lanceolate lyre-shaped hyaline area is present on either side of the axial area. Areolae adjacent to the raphe branches are well developed on one side, occasionally with a few areolae on the opposite side.