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Diatom Image Database

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 maior pulchella

Pinnularia maior pulchella


Authority:
Boyer
Year:
1916
References:
Patrick, R. & Reimer, C. W (1966). The Diatoms of the United States I. Monographs of the Academy of Natural Sciences of Philadelphia. Pennsylvania. pp. 629-630; 662-663 [pl.61:5]
Ecological Preference:
Fresh
Description:
Valve is slender, strongly gibbous in the middle portion, with somewhat swollen and rounded ends; axial area is about 1/4 the valve breadth; raphe is filamentous, with "question mark"-shaped terminal fissures; central area is asymmetrical and rounded, about 1/3 the valve breadth; striae are almost parallel throughout most of the valve, radiate in the middle portion and slightly convergent at the ends, and are crossed by a broad band; length is 220-273µm, breadth at the centre of the valve is about 40µm; striae count is 6-7 in 10µm
Projects:
  • Transect Project


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