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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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View a list of all species

You can also click on one of labeled areas on the map to browse by location.
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)

Tryblionella coarctata

Tryblionella coarctata

Tryblionella coarctata

(Grunow in Cleve & Grunow) Mann
Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.2, pg.50, Fig.38:15,15A; Wikowski et al. (2000):"Iconographia Diatomologica (Vol.VII). Diatom flora of marine coast I", pg.374, Pl.186:4,5; Round, F.E. et al. (1990):"The Diatoms. Biology and Morphology of the genera", pg. 678;
Nitzschia punctata f. coarctata ((Grunow) Hustedt 1957), Nitzschia mediterranea (Hustedt in A. Schmidt et al. 1921), Nitzschia coarctata (Grunow in Cleve & Grunow)
Ecological Preference:
Valves linear-panduriform with short rostrate to sub-apiculate blountly rounded apices, 25-73µm long, 10-23µm broad. Raphe strongly eccentric, fibulae spaced equaly 8-10 in 10µm, transapical striae punctate, arranged in transverse rows, interrupted by longitudinal rows, 8-10 in 10µm.
  • Southeast Florida Coastal Mangroves
  • Florida Bay Paleo Project
  • Biscayne Bay Paleo Project

  • Sample localities:
  • Biscayne Bay (BISC)