Polysiphonia lanosa

Polysiphonia lanosa
Scientific classification
Domain: Eukaryota
(unranked): Archaeplastida
Division: Rhodophyta
Class: Florideophyceae
Order: Ceramiales
Family: Rhodomelaceae
Genus: Polysiphonia
Species: P. lanosa
Binomial name
Polysiphonia lanosa
(L.) Tandy

Polysiphonia lanosa (Polysiphonia fastigiata (Roth) Greville) is a common species of the red algae (Rhodophyta) often to be found growing on Ascophyllum nodosum.[1]

Description

The thalli of this species are dense tufts, each thallus up to 7.5 cm generally attached by rhizoids to the fronds of Ascophyllum. The erect cylindrical branches divide pseudodichotomously. A transverse section shows an axial cell surrounded by 12 to 24 perixial cells.[1]

Reproduction

The plants are dioecious with spermatangial in tufts at the apices of the branches.[1] The Cystocarps are borne, usually singly.[2]

Distribution

Common around the British Isles and on the shores of Europe from Iceland, Norway to Spain. Also Greenland and Newfoundland to New England.[1]

References

  1. 1 2 3 4 Maggs, C.A. and Hommersand, M.H. 1993, Seaweeds of the British Isles Volume 1 Rhodophyta Part 3A Ceramiales. The Natural History Museum, London ISBN 0-11-310045-0
  2. ↑ Dickinson, C.I. 1963. British Seaweeds. The Kew Series
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