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Diagnostic features

Pennate diatom, boat shaped in valve view, both valves identical, each possessing a raphe (genus is biraphid).  A distinctive stauros (bare area of thickened silica across the centre of the valve face) creates a cross shape in valve view.  Chloroplasts golden brown.

Typical habitats

Our records are from clean water streams


Kingdom Chromista
Phylum Ochrophyta
Class Bacillariophyceae
Order Naviculales
Family Stauroneidaceae
Common name Diatoms