Polysiphonia fibrillosa

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Polysiphonia fibrillosa
Phycologia Britannica, or, A history of British sea-weeds - containing coloured figures, generic and specific characters, synonymes, and descriptions of all the species of algae inhabiting the shores (14578002647).jpg
Illustration of Polysiphonia fibrillosa. 1. natural size. 2. A small branch. 3. Fibril from one of the tips of the same. 4. Branchlets with a capsule. 5. Branchlet with tetraspores. 6. Portion of the lower part of the stem. 7. Transverse section of the same.
Scientific classification Red Pencil Icon.png
(unranked): Archaeplastida
Division: Rhodophyta
Class: Florideophyceae
Order: Ceramiales
Family: Rhodomelaceae
Genus: Polysiphonia
Species:
P. fibrillosa
Binomial name
Polysiphonia fibrillosa

Polysiphonia fibrillosa (Dillwyn) Sprengel is a species of marine red alga in the Rhodophyta. [1]

Contents

Description

Polysiphonia fibrillose is a fine red alga which grows to 25 cm long. The erect cylindrical branches are themselves branched and are attached by a discoid holdfast. The branches consist of a central axis of cells each surrounded by 4 (or 5) pericentral cells of equal length and all elongate and of the same length. Corticating filaments grow down in the grooves between the pericentral cells. Rhizoids grow from the pericentral cells. Trichoblasts are numerous. [2] Other similar species include: P. rhunensis Thuret et Bornet, P.orthocarpa Rosenvinge. P.sertularioides and P.sanguinea C.Agardh. [2]

Reproduction

The plants are dioecious and bear spermatangia near the apices of the branches. Cystocarps are ovoid or globular and tetrasporangia are formed in series near the apices. [2]

Habitat

Common on rocky shores both in the littoral to the sublittoral 10 m or more. Also grows epiphytically, [3]

Distribution

The species is widespread around Great Britain, including Shetland, and Ireland. [2] [3] In Europe it is recorded from Norway, the Baltic and France. [2]

Related Research Articles

<i>Polysiphonia</i> Genus of algae

Polysiphonia is a genus of filamentous red algae with about 19 species on the coasts of the British Isles and about 200 species worldwide, including Crete in Greece, Antarctica and Greenland. Its members are known by a number of common names. It is in the order Ceramiales and family Rhodomelaceae.

<i>Polysiphonia lanosa</i> species of alga

Polysiphonia lanosa is a common species of the red algae (Rhodophyta) often to be found growing on Ascophyllum nodosum.

Polysiphonia atlantica is a small filamentous species of red marine algae Rhodophyta. The thalli form small tufts up to 3 cm long. The axes are ecorticate consisting of axial cells surrounded by four periaxial cells.

<i>Polysiphonia ceramiaeformis</i>

Polysiphonia ceramiaeformis, also called banded siphon weed, is a small red algae (Rhodophyta), in the genus Polysiphonia. Individuals are irregularly branched with the branches extending up to 5.5 centimetres (2.2 in) from a central node and ending in dense tufts of fibres.

Polysiphonia denudata is a small red alga, Rhodophyta, growing as tufts up to 20 cm long without a main branch axis.

Polysiphonia devoniensis is a species of marine algae. It is a small red alga in the Division Rhodophyta. It is a species new to science only described recently and first published in 1993.

<i>Polysiphonia elongata</i> Species of alga

Polysiphonia elongata is a small red marine algae in the Rhodophyta.

<i>Polysiphonia elongella</i> Species of algae

Polysiphonia elongella Harvey in W.J. Hooker is a branched species of marine red algae in the genus in the Polysiphonia in the Rhodophyta.

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

Polysiphonia foetidissima Cocks ex Bornet is small red marine alga in the Rhodophyta.

<i>Polysiphonia fucoides</i> Species of alga

Polysiphoides fucoides (Hudson) Greville is a common marine alga in the Division Rhodophyta.

Polysiphonia furcellata (C.Agardh) Harvey is small marine red alga in the Division Rhodophyta.

<i>Melanothamnus harveyi</i> species of algae

Melanothamnus harveyi, Harvey's siphon weed, is a small marine red alga in the division of Rhodophyta.

<i>Polysiphonia nigra</i> species of algae

Polysiphonia nigra is species of marine alga in the division Rhodophyta.

<i>Polysiphonia simulans</i>

Polysiphonia simulans is a small marine alga in the division Rhodophyta.

<i>Polysiphonia stricta</i> species of alga

Polysiphonia stricta is a small red marine alga in the Division Rhodophyta.

<i>Vertebrata subulifera</i> species of algae

Vertebrata subulifera is rather small marine alga in the division Rhodophyta.

<i>Vertebrata fruticulosa</i> species of algae

Vertebrata fruticulosa(Boergeseniella fruticulosa Kylin) is a small marine alga in the Division Rhodophyta.

<i>Ceramium botryocarpum</i> species of alga

Ceramium botryocarpum is a small red marine alga in the Division Rhodophyta.

Ceramium gatitanum is a small marine red alga.

References

  1. ↑ "Polysiphonia fibrillosa". Integrated Taxonomic Information System . Retrieved 10 April 2017.
  2. 1 2 3 4 5 Maggs, C.A. and Hommersand, M.H. 1993. Seaweeds of the British Isles. Volume 1 Rhodophyta Part 3A. The Natural History Museum, London. ISBN   0-11-310045-0
  3. 1 2 Hardy, F.G. and Guiry, M.D. 2003. A Check-list and Atlas of the Seaweeds of Britain and Ireland. British Phycological Society. ISBN   0-9527115-16


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