Diatoms of North AmericaDiatoms of North America
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Guide to Cyclotella kingstonii

(J.R. Johansen, Kociolek and R.L. Lowe) M.L. Julius, K.M. Downey, E.C. Theriot and A.J. Alverson 2021

Spicatacribra Kingstonii Guide
Credit: Rex Lowe
  1. Valve face flat
  2. Central areolae larger than marginal areolae
  3. Marginal fultoportulae conspicuous
  4. Areolae coarse

The valve face is flat, with relatively large, coarse areolae. Striae are radial. Central areolae are larger than the marginal areolae. The marginal fultoportulae are distinct in LM, while the rimoportulae are not distinguishable.