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Diagnostic features

Cylindrical cells, round in valve view and square to rectangular in girdle view. Numerous discoidal golden-brown chloroplasts. Forms long chains that make up prolific grey-green or brown slimes.

Typical habitats

Can form prolific blooms in unshaded stony streams/rivers


Kingdom Chromista
Phylum Ochrophyta
Class Bacillariophyceae
Order Melosirales
Family Melosiraceae
Common name Diatoms