Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Navicula streckerae

Lange-Bert. and Witkowski in Witkowski et al. 2000

Navicula Streckerae Guide
Credit: Loren Bahls
  1. Striae strongly radiate at center
  2. Voigt discontinuities prominent
  3. Areolae very coarse
  4. Apices narrow and protracted

Valves are lanceolate with protracted ends that are relatively narrow compared to the valve width. The striae are strongly radiate and widely spaced near the center of the valve. The transition between radiate and parallel striae is abrupt at the Voigt discontinuities. Areolae are very coarse and easily distinguished in LM.