Polysiphonia elongella

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Polysiphonia elongella
Polysiphonia elongella.jpg
Illustration of Polysiphonia elongella
Scientific classification Red Pencil Icon.png
(unranked): Archaeplastida
Division: Rhodophyta
Class: Florideophyceae
Order: Ceramiales
Family: Rhodomelaceae
Genus: Polysiphonia
Species:
P. elongella
Binomial name
Polysiphonia elongella
Harvey

Polysiphonia elongella Harvey in W.J. Hooker [1] is a branched species of marine red algae in the genus in the Polysiphonia in the Rhodophyta.

Contents

Description

This marine alga grows as small cylindrical thalli branching to about 10 cm long. It grows as an erect axis attached by a disk-like holdfast. The main axis is unbranched towards the base but bears lateral branches higher up. Each erect axes is composed of a polysiphonous axis with a central row of cells surrounded [2] 4 perixial cells all of the same length. [3] The branches, unlike Polysiphonia elongate, are only slightly constricted at their base. [3] [4] [5] Cortication filaments grow downwards in the grooves between the periaxial cells and lower down these form a complete cortication. Trichoblasts are borne near the apices. [3]

Reproduction

Globose cystocarps and bisporangia are recorded, the tetrasporangia are sparse. [3]

Habitat

Grows below low-water on sheltered shores. [1] [6]

Distribution

The species is recorded from Ireland, Great Britain, including the Isle of Man, the Shetland Islands and the Channel Islands. [1] The few records from Northern Ireland are old and require confirmation. [7] [3] Also recorded from France and the Mediterranean. [3]

Related Research Articles

<i>Ceramium</i> genus of algae

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<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.

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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.

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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.

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

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

Polysiphonia fibrillosa (Dillwyn) Sprengel is a species of marine red alga in the 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>Choreocolax polysiphoniae</i> species of alga

Choreocolax polysiphoniae is a minute marine parasitic alga in the division Rhodophyta.

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

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

Polysiphonia opaca (C.Agardh) Moris et De Notaris is a small marine alga in the division Rhodophyta.

<i>Polysiphonia simulans</i>

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

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

Vertebrata simulans Harvey is a small densely branched 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 echionotum</i> species of alga

Ceramium echionotum is a small marine alga in the division Rhodophyta.

References

  1. 1 2 3 Hardy, F.G. and Guiry, M.D. 2003 A Checklist and Atlas of the Seaweeds of Britain and Ireland. The British Phycological Society. ISBN   0-9527115-16
  2. ↑ Jones, E. 1962 A key to the genera of British seaweeds reprinted from Field Studies Volume 1 (4) p23
  3. 1 2 3 4 5 6 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
  4. ↑ Newton, L. 1931. A Handbook of the British Seaweeds. British Museum London
  5. ↑ Harvey, W.H. 1841. A Manual of the British Algae. London
  6. ↑ Morton, O. 2003 The marine macroalgae of County Donegal, Ireland. Bulletin of the Irish Biogeographical Society no.27
  7. ↑ Morton, O. 1994. Marine Algae of Northern Ireland. Ulster Museum ISBN   0-900761-28-8
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