Polysiphonia fibrata

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Polysiphonia fibrata
Polysiphonia fibrata
Scientific classification Edit this classification
Domain:Eukaryota
Clade:Archaeplastida
Division:Rhodophyta
Class:Florideophyceae
Order:Ceramiales
Family:Rhodomelaceae
Genus:Polysiphonia
Species:
P. fibrata
Binomial name
Polysiphonia fibrata
(Dillwyn) Harvey in W.J.Hooker

Polysiphonia fibrata is a species of Polysiphonia that grows as small dense tufted and finely branched marine alga in the Rhodophyta.

Description

[edit]

The branches of P. fibrate are numerous and much interwoven forming tufts up to 20 cm long. They are fine, terete, cylindrical, erect and dull brownish-red in colour. The branches consist of a central axis with 4 pericentral cells all of the same length as the axial cells. The branches become corticated near the base. Rhizoids and trichoblasts are abundant.[1]

Reproduction

[edit]

The plants are dioecious. Spermatangia are borne near the tips of the branches. The cystocarps are clearly shortly stalked. Tetrasporangia are formed in the branches near the tips.[1]

Habitat

[edit]

To be found on rock, limpets, mussels and on other algae in rock pools at mid-tide and low water.[1]

Distribution

[edit]

Common around Britain including Shetland and Ireland.[2][1][3] Also recorded from Spain,[1] and France.[2]

Note

[edit]

Other species are similar to P. fibrata and difficult to distinguish.[1]

References

[edit]
  1. ^ a b c d e f 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. ^ a b Morton, O. 2003. The marine macroalgae of County Donegal, Ireland. Bulletin of the Irish Biogeographical Society. 27: p.85)
  3. ^ Hardy, F.G. and Guiry, M.D. 2003. A Check-list and Atlas of the Seaweeds of Britain and Ireland. The British Phycological Society ISBN 0-9527115-16


    Polysiphonia fibrata
    Polysiphonia fibrata
    Scientific classification Edit this classification
    Domain:Eukaryota
    Clade:Archaeplastida
    Division:Rhodophyta
    Class:Florideophyceae
    Order:Ceramiales
    Family:Rhodomelaceae
    Genus:Polysiphonia
    Species:
    P. fibrata
    Binomial name
    Polysiphonia fibrata
    (Dillwyn) Harvey in W.J.Hooker

    Polysiphonia fibrata is a species of Polysiphonia that grows as small dense tufted and finely branched marine alga in the Rhodophyta.

    Description

    The branches of P. fibrate are numerous and much interwoven forming tufts up to 20 cm long. They are fine, terete, cylindrical, erect and dull brownish-red in colour. The branches consist of a central axis with 4 pericentral cells all of the same length as the axial cells. The branches become corticated near the base. Rhizoids and trichoblasts are abundant.[1]

    Reproduction

    The plants are dioecious. Spermatangia are borne near the tips of the branches. The cystocarps are clearly shortly stalked. Tetrasporangia are formed in the branches near the tips.[1]

    Habitat

    To be found on rock, limpets, mussels and on other algae in rock pools at mid-tide and low water.[1]

    Distribution

    Common around Britain including Shetland and Ireland.[2][1][3] Also recorded from Spain,[1] and France.[2]

    Note

    Other species are similar to P. fibrata and difficult to distinguish.[1]

    References

    1. ^ a b c d e f 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. ^ a b Morton, O. 2003. The marine macroalgae of County Donegal, Ireland. Bulletin of the Irish Biogeographical Society. 27: p.85)
    3. ^ Hardy, F.G. and Guiry, M.D. 2003. A Check-list and Atlas of the Seaweeds of Britain and Ireland. The British Phycological Society ISBN 0-9527115-16


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