Genus
Macrocystis
Macrocystis pyrifera. Photo: (c) Shannon DeVaney, some rights reserved (CC BY-NC)
Macrocystis is a monospecific 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 the individual may live for up to three years; stipes/fronds within a whole individual undergo senescence, where each frond may persist for approximately 100 days. The genus is found widely in subtropical, temperate, and sub-Antarctic oceans of the Southern Hemisphere (e.g….
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