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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)

Eunotia naegelii

Migula in Thome
Krammer K. & Lange-Bertalot H. (1991): "Susswaserflora von Mitteleuropa", Vol.3, pg.182, Fig.140:1-6;
Synedra alpina Naeg. ex. Kütz. 1849; Eunotia naegelii Migula in Thome 1907
Ecological Preference:
Valve is slightly arched, narrowly lanceolate, narrowing toward rounded or somewhat capitate ends which do not follow general valve contour and thus appear to bend back (valve is generally long and slender); terminal nodules and raphe are distinct, but usually small; species is quite similar to E. curvata, except it differs in its length-to-breadth ratio, which is 27:1 or more (it also differs from E. glacialis in this feature); length is 45-130µm, breadth is 1.5-3.5µm; striae count is 14-20 in 10µm
some specimens have exhibited wider breadth than type
  • Southeast Florida Coastal Mangroves
  • Florida Bay Paleo Project
  • Dosing Project
  • Transect Project

  • Sample localities:
  • Water Conservation Areas (WCAs)