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Welcome to the Diatom Image Database! The Periphyton Group at Florida International University created and maintains the Diatom Image Database, which includes over 980 diatom taxa found in the greater Everglades region of south Florida. Please send questions or comments about the Diatom Image Database to Franco Tobias .

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You can also click on one of labeled areas on the map to browse by location.
Map of south Florida Loxahatchee (LOX) WCA 2A WCA 3A Biscayne Bay Shark River Slough (SRS) Taylor Slough (TS) Florida Bay Everglades National Park (ENP) Everglades National Park (ENP)

Navicula angusta

Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.1, pg.97, Fig.28:1-5;
Navicula cari var. angusta (Grunow in Van Heurck, 1880), Navicula pseudocari (Kraske, 1939)
Ecological Preference:
Valve linear-lanceolate with slightly rostrate, rounded ends; axial area is narrow, central area is transverse, rounded and almost reaching valve margins; terminal nodules distinct and not large; striae are radiate at centre of valve to convergent at the ends; length is 43-65µm, breadth is 5-7µm (length-to-breadth ratio 7:1-10:1); striae count is 12-14 in 10µm
  • Southeast Florida Coastal Mangroves
  • Transect Project

  • Sample localities:
  • Water Conservation Area 2A (WCA 2A)