Dumontia contorta: Difference between revisions
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'''''Dumontia contorta''''' (S.G. Gmelin) Ruprecht <ref name="Irvine 83">Irvine, L.M. 1983. ''Seaweeds of the British Isles'' Volume 1 Rhodophyta. Part 2A. British Museum (Natural History) ISBN 0 565 00871 4</ref> |
'''''Dumontia contorta''''' (S.G. Gmelin) Ruprecht <ref name="Irvine 83">Irvine, L.M. 1983. ''Seaweeds of the British Isles'' Volume 1 Rhodophyta. Part 2A. British Museum (Natural History) ISBN 0 565 00871 4</ref> |
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Dumontia contorta is a relatively small epiphytic algae of the shore. |
Dumontia contorta is a relatively small epiphytic algae of the sea-shore. |
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==Description== |
==Description== |
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Revision as of 20:41, 30 December 2015
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| Dumontia contorta (S.G. Gmelin) Ruprecht
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Dumontia contorta (S.G. Gmelin) Ruprecht [1]
Dumontia contorta is a relatively small epiphytic algae of the sea-shore.
Description
The thallus grows from a discoid holdfast to a length of about 23 cms. The fronds branch irregularly and sparingly.[2] Branches hollow, soft and twisted, dark reddish brown in colour which bleach towards the tips, they clearly taper at their junction.[1] The plants are dioecious with spermatangia, carposporangia and tetrasporangia.[1]
Habitat
Generally epilithic in rock pools of the littoral.[1]
Distribution
Common around the British Isles. Europe from Russia to Portugal and Canada to USA. In the NW Pacific and Alaska.[1][3]
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References
- ^ a b c d e Irvine, L.M. 1983. Seaweeds of the British Isles Volume 1 Rhodophyta. Part 2A. British Museum (Natural History) ISBN 0 565 00871 4
- ^ Jones, W.E. 1964. A key to the genera of the British seaweeds. Field Studies 1 no.4:1 - 32
- ^ Morton, O. 2003. The marine macroalgae of County Donegal, Ireland. Bulletin of the Irish Biogeographical Society No. 27 pp.3 - 164