Codium

Codium
Dead man's fingers (Codium fragile) off the Massachusetts coast
Scientific classification
(unranked):Viridiplantae
Class:Ulvophyceae
Order:Bryopsidales
Family:Codiaceae
Genus:Codium
Stackhouse, 1797
Type species
Codium tomentosum
Species

See text

Codium cylindricum Holmes, type definition herbarium specimen.

Codium is a genus of seaweed in the Chlorophyta of the order Bryopsidales. There are about 50 species worldwide.[1]

Description

The genus has thalli of two forms, either erect or prostrate. The erect plants are dichotomously branched to 40 centimetres (16 in) long with branches forming a compact spongy structure, not calcareous. The final branches form a surface layer of close palisade cortex of utricles. The non-erect species form either a prostrate or globular thallus with a velvet-like surface, the final branches forming a close cortex of utricles.[2]

Distribution

Ireland

Two of these species are very rare in Ireland. Codium adhaerens has been recorded from a few sites on the west coast and from Tory Island on the north coast in County Donegal. In 1837 it was found in Church Bay in County Antrim,[3] but has not been found there since.

There are other species of "doubtful validity":- Codium amphibium is included in William Henry Harvey's Phycologia Britannica Pl.xxxv. and noted as: "spreading in patches of great extent along the edge of the sea, over the surface of a turf-bog which meets the shore at Roundstone Bay" (Ireland).

Worldwide

References

  1. ↑ C. van den Hoek; D. G. Mann; M. H. Jahns (1995). Algae: An Introduction to Phycology. Cambridge: Cambridge University Press. ISBN 978-0-521-30419-1.
  2. ↑ E. M. Burrows (1991). Seaweeds of the British Isles. Volume 2. Chlorophyta. London: Natural History Museum. ISBN 978-0-565-00981-6.
  3. ↑ Morton,O. 1994. Marine Algae of Northern Ireland. Ulster Museum. ISBN 0 900761 28 8
  4. ↑ Abbott, Isabella A (1989). Lembi, Carole A.; Waaland, J. Robert, eds. Algae and human affairs. Cambridge University Press, Phycological Society of America. p. 141. ISBN 978-0-521-32115-0. Food and food products from seaweeds

General references

  • Guiry, M.D.; Guiry, G.M. (2007). "Genus: Codium taxonomy browser". Galway: AlgaeBase version 4.2 World-wide electronic publication, National University of Ireland. Retrieved 2007-09-24.
  • G. Hardy; M. D. Guiry (2006). A Check-list and Atlas of the Seaweeds of Britain and Ireland (PDF). London: British Phycological Society. ISBN 978-3-906166-35-3.
  • O. Morton (1978). "Some interesting records of algae from Ireland". Ir. Nat. J. 19: 140–242.
  • O. Morton (1994). Marine Algae of Northern Ireland. Belfast: Ulster Museum. ISBN 978-0-900761-28-7.
  • O. Morton (2003). "The marine macroalgae of County Donegal, Ireland". Bull. Ir. Biogeog. Soc. 27: 3–164.
  • Hilda M. Parkes (1975). "Records of Codium species in Ireland". Proc. R. I. A. 75 (B): 123–134.
  • P. C. Silva (1955). "The dichotomous species of Codium in Britain". Journal of the Marine Biological Association of the United Kingdom. 24 (3): 565–577. doi:10.1017/S0025315400008821.
  • P. C. Silva; D. E. G. Irvine (1960). "Codium amphibium: a species of doubtful validity". Journal of the Marine Biological Association of the United Kingdom. 39 (3): 631–636. doi:10.1017/S002531540001359X.
  • F. G. Hardy; I. Tittley. "Codium fragile". Marine advice: non-native species. Joint Nature Conservation Committee. Retrieved 2007-06-29.
  • M. D. Guiry (2006-11-11). "Codium fragile (Suringar) Hariot". AlgaeBase.
  • M. D. Guiry (2007-02-22). "Codium fragile ssp. tomentosoides (van Goor) P.C. Silva". AlgaeBase.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.