1. 
   Nitzschia
   (from the article `algae`) ...fossil diatomite deposits; Cyclotella and Thalassiosira (centrics) and Navicula and Nitzschia (pennates).Class BicosoecophyceaeMay be included in ...
   Found op http://www.britannica.com/eb/a-z/n/45
   
   
2. 
   Nitzschia
   Nitzschia is a common pennate marine diatom. In the scientific literature this genus is sometimes termed Nitzchia, this taxon has many species described, which all have a similar morphology. ==Occurrence== Nitzschia is found mostly in colder waters, and is associated with both Arctic and Antarctic ...
   Found op http://en.wikipedia.org/wiki/Nitzschia
   
   

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