Overview

Comprehensive Description

Description

 A foliose red algae with a tough flat frond usually between 20 and 50 cm in length, but sometimes up to 1m. The algae grows directly from a small discoid holdfast gradually widening and subdividing. The stipe is inconspicuous, rarely to 5 mm long. Older parts may have small 'leaflets' along the margin especially where damaged. Dark red, with purple tints under water.Sometimes the blade divisions are wedge-shaped and finely dissected above or the blade has numerous linear divisions throughout. This phenomenon seems to occur under fairly sheltered, silty conditions. Such plants are difficult to identify without examining the anatomical structure and the cortical cells in surface view, and have been confused with Callophyllis cristata (L. ex Turn.) Kütz. and Gracilaria foliifera (Forsk.) Børk (Irvine, 1983). Palmaria palmata has a multiaxial, pseudoparenchymatous construction and, in section, can be seen to consist of a large-celled medulla bounded on each side by a small-celled cortex.
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Source: Marine Life Information Network

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Description

Growing as a flat blade from a discoid holdfast and dividing into a few broad segments to a maximum length of 50 cm and branching from the margins. Dark brownish-red. Dilsea carnosa is similar but very leathery, usually undivided although older blades may split.
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© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

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Distribution

Generally distributed around the British Isles. Europe: Portugal, Atlantic coasts of Spain and France, Baltic Sea, Norway, Faroes, Spitzbergen and Iceland. Greenland. Atlantic coasts of North America: Canada, Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut and New Jersey. Further afield: Arctic Sea from the White Sea and Baffin Bay. Pacific coasts of North America, Alaska to California, Japan and Korea.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Ecology

Habitat

Depth range based on 328 specimens in 2 taxa.
Water temperature and chemistry ranges based on 31 samples.

Environmental ranges
  Depth range (m): 0 - 34.75
  Temperature range (°C): 3.434 - 12.348
  Nitrate (umol/L): 3.822 - 7.121
  Salinity (PPS): 34.690 - 35.363
  Oxygen (ml/l): 6.069 - 7.421
  Phosphate (umol/l): 0.336 - 0.439
  Silicate (umol/l): 2.315 - 3.388

Graphical representation

Depth range (m): 0 - 34.75

Temperature range (°C): 3.434 - 12.348

Nitrate (umol/L): 3.822 - 7.121

Salinity (PPS): 34.690 - 35.363

Oxygen (ml/l): 6.069 - 7.421

Phosphate (umol/l): 0.336 - 0.439

Silicate (umol/l): 2.315 - 3.388
 
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 Epilithic and epiphytic, especially on Laminaria hyperborea stipes. Littoral and sublittoral to a depth of 20 m in both sheltered and moderately exposed areas.
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Common. Epilithic or epiphytic especially on Laminaria stipes. Lower littoral and sublittoral to about 20 m on all except the most exposed rocky shores.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Palmaria palmata

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Palmaria palmata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 36
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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