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Topic: Xyridaceae


In the News (Wed 19 Nov 08)

  
  Botany 307F - Families of Vascular Plants - Assignment 2
The Xyridaceae family is composed of perennial or sometimes annual herbs that grow in damp, often saline ecosystems (Kral, 1983).
The article provides a description of the characteristics of the Xyridaceae family along with information on the genera found within the family, the taxonomic divisions within the family and the economic importance of the family.
The entry on Xyridaceae in the monograph provides a description of the characteristics of the Xyridaceae family along with information and a detailed key on some species within the genus Xyris that are found in North America.
www.botany.utoronto.ca /Courses/BOT307/F_Organization/307assignment2.html   (2048 words)

  
 Campbell, Lisa M.*, Dennis Wm. Stevenson, and Gustavo A. Romero-González.   (Site not responding. Last check: 2007-10-09)
It is known from a few populations on sandstone mountains (tepuis) on the Guayana Shield of northern South America.
The leaf blades have a marked zone of articulation, and the persistent leaf sheaths function as tanks accumulating water and debris.
The escapose inflorescence, unique in Xyridaceae, combined with the habit give the plant a bromeliaceous appearance, and the species was originally described as a Navia (Bromeliaceae).
www.ou.edu /cas/botany-micro/botany2000/section2/abstracts/35.shtml   (161 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
Xyridaceae: Catalogue of Vascular Plant Species of Eastern Brazil from the New York Botanical Garden
Xyridaceae: Florida taxa from the Atlas of Florida Vascular Plants
Xyridaceae: holdings from Ecology & Evolutionary Biology Conservatory - University of Connecticut
www.csdl.tamu.edu /FLORA/cgi/gateway_family?fam=Xyridaceae   (174 words)

  
 PBIO 450 Lecture Notes - Commelinidae -- Spring 1999
He defines the Bromeliales to include the Rapateaceae, Mayacaceae, Xyridaceae and Eriocaulaceae, a strange combination at best (he altered this in 1999 by accepting Xyridales).
The majority of the species are terrestrial herbs, although species of the Xyridaceae are commonly found in marshy places, and Mayaca is an aquatic.
Reveal refers the Rapateaceae, Xyridaceae and Mayacaceae to the Xyridales; Takhtajan places each family in their own order, although the "Rapateales" has yet to be validly published (see Reveal & Doweld in a forthcoming paper in Novon).
www.life.umd.edu /emeritus/reveal/pbio/pb450/comm.html   (951 words)

  
 Campbell, Lisa M.*, Dennis Wm. Stevenson, Jerrold I Davis, and Christopher R. Hardy.   (Site not responding. Last check: 2007-10-09)
In traditional systems of classification it has been suggested that this genus is related to Commelinaceae based on poricidal anther dehiscence and the operculate seeds, or to Xyridaceae based on parietal placentation and orthotropus, tenuinucellate ovules.
However, subsequent data has shown that seed operculum development differs between Mayaca and Commelinaceae, and that Xyridaceae are variable in ovule development and orientation, as well as placentation.
Despite this, Mayaca and Xyridaceae share an exothecium, a feature not known to occur in Commelinaceae.
www.botany2001.org /section12/abstracts/189.shtml   (224 words)

  
 Xyridaceae   (Site not responding. Last check: 2007-10-09)
[ Xerophyllaceae ] [ Xyridaceae ] [ Zamiaceae ]
Vernacular names of plants within the Family Xyridaceae
For a description of the methodology followed in establishing this hierarchy see the note Nomenclature used in The Compleat Botanica.
www.crescentbloom.com /plants/Familia/X/Xyridaceae.htm   (67 words)

  
 Definition of xyridaceae - Merriam-Webster Online Dictionary
xyridaceae is one of more than 1,000,000 entries available at Merriam-WebsterUnabridged.com.
For More Information on "xyridaceae" go to Britannica.com
Get the Top 10 Search Results for "xyridaceae"
www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=Xyridaceae   (82 words)

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