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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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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)

Sellaphora laevissima

Sellaphora laevissima

Patrick, R. & Reimer, C. W (1966). The Diatoms of the United States I. Monographs of the Academy of Natural Sciences of Philadelphia. Pennsylvania. pp. 497-498; 558-559 [pl.47:13]
Navicula laevissima Kütz. 1844; Stauroneis witrockii Lagerst. 1873; Navicula bacilliformis Grun. in Cl. & Grun. 1880; Navicula wittrockii (Lagerst.) Temp. & Perag. 1909
Ecological Preference:
Valve is linear, slightly swollen in the middle portion, with rounded ends; axial area is narrow; terminal clear area is not large and wider than the axial area; central area is transverse, formed by the irregular shortening of the striae; striae somewhat more radiate, curved, with the curvature more marked at the valve ends; length is 32-45µm, breadth is 8-10µm; striae count is 12-15 in 10µm (centre), becoming 20-22 in 10µm (ends)
some specimens recorded have been smaller than type
  • Dosing Project
  • Transect Project

  • Sample localities:
  • Water Conservation Areas (WCAs)