Translations:AY Honors/Marine Algae/Answer Key/23/en
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Kelp (Macrocystis)
Description: Macrocystis is a genus of kelp, some species of which are so huge that the plants may grow to up to 60m. The stipes arise from a holdfast and branch three or four times from near the base. Blades develop at irregular intervals along the stipe. M. pyrifera grows to over 45 m long. The stipes are unbranched and each has a gas bladder at its base.