Fucales
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 Ascophyllum nodosum
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Bifurcariopsidaceae |
Fucales is an order in the Phylum Phaeophyta or Brown algae. The list of families (see box at right) in Fucales, as well as additional taxonomic information on algae, is publicly accessible at http://www.algaebase.org [1]
The Class Phaeophyceae is included within the Division Heterokontophyta. This name comes from the Greek word phaios meaning "brown" and phyton meaning plant. [2] They include the largest plants in the sea, some however are small and fine in structure.
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[edit] Classification
The Class Phaeophyceae is devided into the following orders (Hoek, 1995) [3]
Ectocarpales
Sphacelariales
Syringodermatales
Dictyotales
Scytosiphonales
Cutleriales
Dictyosiphonales
Chordariales
Sporochnales
Desmarestiales
Laminariales
Fucales
Durvillaeales
Ascoseirales
The Fucales include some of the more common littoral seaweeds and the members of the order have the typical seaweed construction of a holdfast, stipe and lamina. The lamina is often much branched and may include gas filled bladders. Growth is by division of the apical cells.
They are Oogamous with the gametophyte generation reduced to the gametes formed in the thallus of the sporophyte.
As their general name suggests their pigmentation is brown. All species are multicellular. Full details of the characteristics are complex and consist of details of the flagella, shape of the chloroplasts, structure of the cell walls and details of the life-cycle. [3]
[edit] Numbers
There are about 1,500 - 2,000 species of brown seaweeds world-wide.[4]
[edit] References
- ^ Guiry, M.D. & Guiry, G.M. 2006. AlgaeBase version 4.2. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 07 December 2006
- ^ Huisman, J.M. 2000. Marine Plants of Australia. University of Western Australia Press, Australia. ISBN 1 876268 33 6
- ^ a b Hoek, C.van den, Mann, D.G. and Jahns, H.M.1995. Algae. Cambridge University Press. ISBN 0 521 30419 9
- ^ Thomas,D.N. 2002. Seaweeds. The Natural History Museum, London. ISBN 0565 091751
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