Phaeophyta

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Phaeophyta (brown algae) A division of algae which includes no single-celled species; almost all are marine, growing mostly in the intertidal regions (but species of Bodenella and Heribaudiella occur in fresh water). They are the dominant seaweeds in the colder waters of the northern hemisphere. They are typically olive-brown or greenish in colour (at least when wet) owing to the presence of the pigment fucoxanthin in the chloroplasts. There are at least 13 orders, and many genera.

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