Fucus (pronounced 'fewcus') is a type of what?
Fucus spiralis Fucus spiralis Fucus spiralis is a species of seaweed, a brown alga (Heterokontophyta, Phaeophyceae), living on the littoral shore of the Atlantic coasts of Europe and North America. It has the common names of spiral wrack and flat wrack. "Fucus spiralis" is olive brown in colour and similar to "Fucus vesiculosus" and "Fucus serratus". It grows to about 30 cm long and branches somewhat irregularly dichotomous and is attached, generally to rock, by a discoid holdfast. The flattened blade has a distinct mid-rib and is usually spirally twisted without a serrated edge, as in "Fucus serratus", and it does not
Fucus ceranoides Fucus ceranoides Fucus ceranoides is a species of brown algae found in the littoral zone of the sea shore. "Fucus ceranoides" is a species similar to other species of "Fucus". It is linear to about 1 cm wide and is attached by a discoid holdfast. The branches grow to a length of 60 cm and show a clear midrib. Its margin is entire and it differs from "Fucus serratus" in not having a serrated edge and unlike "Fucus vesiculosus" it does not have air vesicles, however irregular swellings gives it a resemblance to "F. vesiculosus". "Fucus spiralis" has spirally twisted