Monterey Bay Aquarium Research Institute
Marine Botany

Egregia menziesii

Class Phaeophyceae  

    The Brown Algae  

Most browns are intertidal or upper subtidal marine algae, except for the giant kelps, and most are perennial.  All are multicellular with filamentous thalli, and most cells are uninucleate. Fucoxanthin is the major accessory pigment amongst all browns, and starch is never used as a storage product. Growth of the thalli are intercalary or apical. The browns have seperate sporangial and gametangial life history stages. Sporangia are unilocular or plurilocular, while gametangia are mostly plurilocular. Sexual reproduction can be isogamous, anisogamous, or oogamous. Motile zoospore are usually part of the life history, and they, along with the male gametes usually have two laterally inserted, dissimilar flagella. The zygotes of the browns develop without a dormant period.  

Reference for this page:
Abbott, Isabella A., and George J. Hollenberg. Marine Algae of California. Stanford University Press, Stanford, CA. 1976.

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