View source for Fucales

{{Taxobox
| color = #FA7B62
| name = Fucales
| image = Ascophylum nodosum.jpg 
| image_caption = ''Ascophyllum nodosum''
| domain = [[Eukaryota]]
| regnum = [[Chromalveolata]]
| phylum = [[Heterokont]]ophyta
| classis = [[Brown alga|Phaeophyceae]]
| ordo = '''Fucales'''
| ordo_authority = [[Kylin]]
| subdivision_ranks = Families
|subdivision = 
[[Bifurcariopsidaceae]]<br> 
[[Cystoseiraceae]]<br>
[[Durvillaeaceae]]<br>   
[[Fucaceae]]<br>
[[Himanthaliaceae]]<br>   
[[Hormosiraceae]]<br>
[[Notheiaceae]]<br>
[[Sargassaceae]]<br>
[[Seirococcaceae]]<br>
[[Xiphophoraceae]]<br> 
}}

'''Fucales''' is an [[order (biology)|order]] in the [[Phylum]] [[ Phaeophyta]] or '''[[Brown algae]]'''. Members of this order are fucoids. The list of families (see box at right) in ''Fucales'', as well as additional taxonomic information on algae, is publicly accessible at Algaebase. [http://www.algaebase.org] <ref name="Guiry and Guiry"> '''Guiry, M.D. and 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</ref>

The Class Phaeophyceae is included within the Division Heterokontophyta.<ref name="Hardy and Guiry 06">'''Hardy, .G. and Guiry, M.D.''' 2006. ''A Check-list and Atlas of the Seaweeds of Britain and Ireland.'' 2006. The British Phycologcal Society. ISBN 3-906166-35-X</ref> This name comes from the Greek word ''phaios'' meaning "brown" and ''phyton'' meaning plant.<ref name="Huisman 00">'''Huisman, J.M.''' 2000. ''Marine Plants of Australia.'' University of Western Australia Press, Australia. ISBN 1 876268 33 6</ref> They include some of the largest plants in the sea, some however are small and fine in structure.

==Classification==
The Class Phaeophyceae is devided into the following orders (Hoek, 1995). <ref name="Hoek, Mann and Jahns 95">'''Hoek, C.van den, Mann, D.G. and Jahns, H.M.''' 1995. ''Algae.'' Cambridge University Press. ISBN 0 521 30419 9</ref>

*Ectocarpales

*Sphacelariales

*Syringodermatales

*Dictyotales

*Scytosiphonales

*Cutleriales

*Dictyosiphonales

*Chordariales

*Sporochnales

*Desmarestiales

*[[Laminariales]]

*Fucales                                                                                                                **''[[Fucus]]''

*Durvillaeales

*Ascoseirales



The Fucales include some of the more common [[littoral]] [[seaweed]]s and the members of the order have the typical seaweed construction: a [[holdfast]], [[Stipe (botany)|stipe]] and [[lamina (algae)|lamina]]. The lamina is often much branched and may include gas filled [[bladder]]s. Growth is by division of the apical cells.

They are oogamous where there is fusion between the small male gamete and the large female gamete. 

As their general name suggests their [[pigment]]ation 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. <ref name="Hoek, Mann and Jahns 95"/>

==Numbers==
There are about 1,500 - 2,000 species of brown seaweeds world-wide.<ref name="Thomas 02">'''Thomas,D.N.''' 2002. ''Seaweeds.'' The Natural History Museum, London. ISBN 0565 091751</ref>

==References==

{{reflist|2}}
{{algae-stub}}

==Further reading==
*Fletcher, R.L.1987. ''Seaweeds of the British Isles.''  Volume '''3''' , Part 1. British Museum (Natural History), London. ISBN 0 565 00992 3

==External links==
http://www.algaebase.org/taxonomy_detail.lasso?taxonid=4360&-session=abv3:51909EC3079e719088yIl3148D27


[[Category:Brown algae]]

[[da:Brunalge-ordenen]]
[[es:Fucales]]
[[pt:Fucus vesiculosus]]