- Desmid
Taxobox
name = Desmids
image_width = 300px
image_caption =
regnum =Plant ae
divisio =Charophyta
classis =Zygnemophyceae
ordo = Desmidiales
subdivision_ranks = Families
subdivision =Closteriaceae Desmidiaceae Gonatozygaceae Peniaceae Desmids are an order (Desmidiales) of
green alga e, comprising around 40 genera and 5,000 [Van den Hoek, C., D. G. Mann, & H. M. Jahns, 1995. "Algae:An Introduction to Phycology", page 468. (Cambridge: Cambridge University Press). ISBN 0-521-30419-9] to 6,000 [Brook, Alan J., 1981. "The Biology of Desmids", page 1. (Berkeley: University of California Press). ISBN 0-520-04281-6]species , found mostly but not exclusively infresh water . Most are unicellular, and are divided into twocompartment s separated by a narrowbridge oristhmus . Desmids assume a variety of highly symmetrical and generally attractive shapes, which provide the basis for their classification. Each compartment has onechloroplast , and no flagella.Sexual reproduction occurs through a process ofconjugation , also found among theZygnematales . These two groups are closely related, and may be united as the divisionGamophyta . The desmids are sometimes treated as members of the Zygnematales, but more often given the separate order Desmidiales.References
Further reading
* Brook, Alan J. (1981) "The Biology of Desmids". (University of California Press, "Botanical Monographs" 16). ISBN 0-520-04281-6.
Links
* [http://www.algaebase.org/browse/taxonomy/?id=4347 Algaebase: Zygnematophyceae]
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