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Ahnfeltia plicata : ウィキペディア英語版 | Ahnfeltia plicata
''Ahnfeltia plicata'', the landlady's wig, is a species of red alga in the family Ahnfeltiaceae. It grows in northern parts of the Atlantic Ocean. ==Description== The landlady's wig forms tufted perennial plants with wiry fronds, branching from a discoid holdfast. The cylindrical fronds branch and are terete 〔Dixon, P.S. & Irvine, L.M. 1977. ''Seaweeds of the British Isles. Volume 1 Rhodophyta.'' British Museum (Natural History). ISBN 0-565 00781 5〕they branch irregularly in a dichotomous manner. Each plant is about tall and wide. The holdfast is up to wide and composed of a thin layer encrusting the rock substrate. The frond's reddish-black colour results from the red pigments phycoerythrin and phycocyanin. Their colour is so intense that it masks the presence of other pigments, chlorophyll a and beta-carotene. Some unique xanthophylls are also present in this seaweed.〔 The landlady's wig could be confused with ''Cordylecladia erecta'' but that species is less common and is thicker with more rigid, regularly branched fronds.〔(【引用サイトリンク】title=''Ahnfeltia plicata'' (Hudson) Fries )〕
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