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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)

Diadesmis confervacea 01

Diadesmis confervacea   01

F. T. Kützing
Fourtanier, E. & Kociolek, J. P. (1999). Catalogue of the diatom genera. in: Diatom Research (F. Round, K. Serieyssol and M. J. Sullivan, eds), 14(1), p. 53
Diadesmis confervacea Kütz. 1844; Diadesmis peregrina W. Sm. 1857; Navicula confervacea var. hungarica Grun. In Van Heurck 1880; Navicula confervacea var. peregrina Grun. In Van Heurck 1880; 2 type was designated by Round, Crawford & Mann (1990); there were four species originally included by Kützing: Diadesmis confervacea, D. laevis, D. sculpta and D. bacillum
Valve is elliptical to lanceolate with bluntly rounded ends; raphe is filiform, with the central ends far apart; axial area is linear-lanceolate, widening strongly to a distinct central area surrounded by coarse hyaline space; distinctly punctate striae are radial; length is 9-28µm, breadth is 4-10µm; striae count is (15)18-26 in 10µm
specimens recorded have more tapered, rounded apices than as described
  • Transect Project

  • Sample localities:
  • Water Conservation Area 2A (WCA 2A)
  • Water Conservation Area 3A (WCA 3A)