Polysiphonia devoniensis

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Polysiphonia devoniensis
Scientific classification Red Pencil Icon.png
(unranked): Archaeplastida
Division: Rhodophyta
Class: Florideophyceae
Order: Ceramiales
Family: Rhodomelaceae
Genus: Polysiphonia
Species:
P. devoniensis
Binomial name
Polysiphonia devoniensis
Maggs & Hommersand

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. [1]

Contents

Description

Polysiphonia devoniensis grows as a tuft of erect, fine, terete branches up to 2.5 cm long and brown in colour. Each branch consists of an axis of central cells surrounded by 4 perixial cells, all of the same length surrounding the central cells and are ecorticate. Trichoblasts are formed near the tips of the branches and rhizoids grow from the periaxial cells of the prostrate axes and trichoblasts from the apex. The rhizoids remain open with the periaxial cells. [1]

Reproduction

The plants are dioecious. Spermatangia are borne in loose clusters in clusters. The cystocarps are ovoid or round or slightly urceolate with a large ostiole. The tetrasporangia occur spiral series in the branches. [1]

Distribution

Recorded from three counties of the south of England: Dorset, Devon and Cornwall, [1] with one record from Wales. [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.

Polysiphonia brodiei (Dillwyn) Sprengel, now generally spelled "brodiaei", as it is named after James Brodie is a species of red algae in the Rhodophyta. It grows in tufts up to 36 cm long.

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

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.

<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.

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

Polysiphonia fibrillosa (Dillwyn) Sprengel is a species of marine red 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 alga

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

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

Polysiphonia nigra is a 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> Species of alga

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 alga

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

<i>Vertebrata fruticulosa</i> Species of alga

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

<i>Ceramium ciliatum</i> Species of alga

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

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. ↑ 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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