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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)

Nitzschia thermalis minor

Nitzschia thermalis minor

Kützing, Hilse sensu Podzorski
Podzorski, A. C. (1985). An Illustrated and Annotated Check-List of Diatoms from the Black River Waterways, St. Elizabeth, Jamaica. in: Bibliotheca Diatomologica 7, pp. 60; 136-137 [pl.24:5]
Nitzschia thermalis Kütz. var. minor Hilse 1863; Podzorski states that this name is applied consistently to the same taxon in tropical literature, but contends that this should be referred to as Nitzschia homburgiensis Lange-Bertalot for nomenclatural reasons
Frustules in girdle view are linear rectangle with rounded corners, with centre more or less constricted; valves are linear, constricted in the centre, attenuated at the apices into distinctly rostrate to subcapitate apices; keel is marginal; fibulae (7-10 in 10µm) are evenly elongated transapically but not thickened, with the two central ones further apart than the others; very faint transapical striae, sometimes unresolvable; length is 50-70µm, breadth is 5-10µm; striae count is about 32 in 10µm
  • Transect Project

  • Sample localities:
  • Shark River Slough (SRS)