
Macrocystis is a genus of kelp (large brown algae). This genus contains the largest of all the phaeophyceae or brown algae. Macrocystis has pneumatocysts at the base of its blades. Sporophytes are perennial, and individual stipes may persist for many years. Common along the coast of the eastern Pacific Ocean, from central California to Baja Califo...
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• (n.) An immensely long blackish seaweed of the Pacific (Macrocystis pyrifera), having numerous almond-shaped air vessels.
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genus of brown algae, like Laminaria (but larger), commonly known as kelp (q.v.).[3 related articles]
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http://www.britannica.com/eb/a-z/m/6
Mac`ro·cys'tis noun [ New Latin See
Macro- , and
Cyst .]
(Botany) An immensely long blackish seaweed of the Pacific (
Macrocystis pyrifera ), having numerous almond-shaped air vessels.
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http://www.encyclo.co.uk/webster/M/2

macrocystis An immensely long blackish seaweed of the Pacific (Macrocystis pyrifera), having numerous almond-shaped air vessels.
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http://www.wordinfo.info/words/index/info/view_unit/1234/4
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