Translations:AY Honors/Marine Algae/Answer Key/25/en
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Fucus spiralis Fucus spiralis
Spiral wrack, Flat wrack (Fucus spiralis)
Description: Fucus spiralis is olive brown in color and similar to Fucus vesiculosus and Fucus serratus. It grows to about 30 cm long and branches somewhat irregularly. It attached by a discoid holdfast. The flattened blade has a distinct midrib and is usually spirally twisted without a serrated edge, as are to be seen in Fucus serratus, and it does not show air-vesicles, as is Fucus vesiculosus.
