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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)

Navicula oblonga

Navicula oblonga


Authority:
(Kützing) Kützing
Year:
1844
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. 534; 566-567 (pl.51:6)
Synonyms:
Frustulia oblonga Kütz. 1833; Navicula oblonga (Kütz.) Kütz. 1844; Pinnularia oblonga Rabh. 1853
Ecological Preference:
Fresh-Brackish
Description:
Valve is linear or slightly lanceolate, narrower at truncate, rounded ends; axial area is distinct, approx. 1/4 the valve breadth, and becoming wider toward the centre; the raphe is filamentous with distinct terminal fissures; central area is transverse and rounded; terminal nodules are distinct; lineate striae are radiate throughout most of the Valve and bent near the margins, becoming convergent at the ends; length 70-220µm, breadth is 12-24µm; striae count is 6-9 in 10µm
Projects:
  • Transect Project


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