Dumontia contorta

Dumontia contorta
Scientific classification
(unranked):Archaeplastida
Division:Rhodophyta
Class:Florideophyceae
Order:Gigartinales
Family:Dumontiaceae
Genus:Dumontia
Species: D. contorta
Binomial name
Dumontia contorta

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 centimetres (9.1 in). The fronds branch irregularly and sparingly.[2] The branches are 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 zone.[1]

Distribution

Common around the British Isles. Europe from Russia to Portugal and Canada to United States. In the NW Pacific and Alaska.[1][3]

References

  1. 1 2 3 4 5 Irvine, L.M. 1983. Seaweeds of the British Isles Volume 1 Rhodophyta. Part 2A. British Museum (Natural History) ISBN 0 565 00871 4
  2. ↑ Jones, W.E. 1964. A key to the genera of the British seaweeds. Field Studies 1 no.4:1 - 32
  3. ↑ Morton, O. 2003. The marine macroalgae of County Donegal, Ireland. Bulletin of the Irish Biogeographical Society No. 27 pp.3 - 164
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