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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)

Pinnularia streptoraphe 01

Pinnularia streptoraphe 01

Patrick, R. & Reimer, C. W. (1975). The Diatoms of the United States 2(1). Monographs of the Academy of Natural Sciences of Philadelphia. Pennsylvania. pp. 639; 668-669 [pl.64:4]
Pinnularia streptoraphe Cl. 1891; Navicula streptoraphe (Cl.) Temp. & Perag. 1908
Ecological Preference:
Valve is broadly linear with rounded ends; axial area is distinct but is less than 1/3 the breadth of the valve; raphe is complex, with distinct "question mark"-shaped terminal fissures; central area is more or less asymmetrical and rounded; striae are almost parallel throughout most of the valve, becoming slightly radiate in the middle portion and slightly convergent toward the ends, and crossed by a broad band; length is 135-260µm, breadth is 20-35µm; striae count is about 5 in 10µm
  • Transect Project

  • Sample localities:
  • Water Conservation Areas (WCAs)