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Charophyta

 
Sci-Tech Dictionary: Charophyta
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(kə′räf·əd·ə)

(botany) A group of aquatic plants, ranging in size from a few inches to several feet in height, that live entirely submerged in water.

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Wikipedia: Charophyta
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Charophyta
Chara sp reproductive structure.JPG
Scientific classification
Domain: Eukaryota
(unranked) Archaeplastida
Kingdom: Plantae
Division: Charophyta
Included groups

Mesostigmatophyceae
Chlorokybophyceae
Klebsormidiophyceae
Zygnematophyceae
   Zygnematales
   Desmidiales
Charophyceae
   Coleochaetales
   Charales

The Charophyta are a division of green algae,[1] including the closest relatives of the embryophyte plants.[2] In some groups, such as conjugating green algae, flagellate cells do not occur. The latter group does engage in sexual reproduction, and motility does not involve flagella, since they are totally lacking. Flagellate cells in the form of sperm are found in stoneworts (Charales) and Coleochaetales.

Classification

Because they exclude the embryophytes, the Charophyta make a paraphyletic group[3] (although the division Charophyta is occasionally restricted to simply the Charales or stoneworts, which are monophyletic).[citation needed] The Charophyta plus the embryophytes make up the Streptophyta, which is a monophyletic group.

References

  1. ^ Lewis, Louise A.; Richard M. McCourt (2004). "Green algae and the origin of land plants" (abstract). American Journal of Botany 91 (10): 1535–1556. doi:10.3732/ajb.91.10.1535. http://www.amjbot.org/cgi/content/abstract/91/10/1535. 
  2. ^ Karol KG, McCourt RM, Cimino MT, Delwiche CF (December 2001). "The closest living relatives of land plants". Science (journal) 294 (5550): 2351–3. doi:10.1126/science.1065156. PMID 11743201. http://www.sciencemag.org/cgi/pmidlookup?view=long&pmid=11743201. 
  3. ^ http://tolweb.org/Green_plants/2382

See also

v • d • e
Early land floræ
Related links Cooksonia.png
The first...?
Vascular plant, Cooksonia  • Tree, Wattieza  • Lycopods, the Drepanophycales and the Zosterophylls  • Fungus fossil, Ornatifilum  • Lichen, Spongiophyton
Enigmatic taxa
Cuticular remains: Cosmochlaina, Nematothallus • A giant fungus? — Prototaxites
Sister taxa
Green algae: Charophyta, from which land plants evolved • Chaetocladus, an early alga
Help Wikipedia grow by expanding this navigational box!
v • d • e
Classification of Archaeplastida / Plantae sensu lato
Rhodophyta
Glaucocystophyceae
Viridiplantae/
Plantae
sensu stricto
Charophyta/GA
See also: list of plant orders


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Clavatoraceae (paleobotany)
Trochiliscales (paleobotany)
Paleocharaceae (paleobotany)

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
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