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Topic: Rafflesiales


  
  Rafflesiaceae - Wikipedia, the free encyclopedia
Rafflesiaceae is a family of parasitic plants found in east and southeast Asia, including Rafflesia arnoldii, the plant with the largest flower of all plants.
Rafflesiaceae was considered an unplaced family in the APG II system, while other authors placed it into the order Rafflesiales together with some other families of parasitic plants.
Phylogenetic inference in Rafflesiales: the influence of rate heterogeneity and horizontal gene transfer.
en.wikipedia.org /wiki/Rafflesiaceae   (308 words)

  
 BioMed Central | Full text | Phylogenetic inference in Rafflesiales: the influence of rate heterogeneity and horizontal ...
Rafflesiales are a fascinating and enigmatic group of holoparasitic plants that includes Rafflesia, whose meter-wide flowers are the largest among all angiosperms, and Pilostyles, whose flowers are less than a centimeter in diameter.
Maximum parsimony analyses of the full-length (103 taxon) and reduced (77 taxon) 3-gene matrices were generally congruent and both resulted in all taxa of Rafflesiales being associated with Malvales (Figure 3), although with low bootstrap support for the monophyly of this clade.
Determining the photosynthetic relatives of Rafflesiales has long presented a challenge owing to the extreme reduction and/or modification of morphological structures that have accompanied the evolution of this lineage [3,11].
www.biomedcentral.com /1471-2148/4/40   (8084 words)

  
 BioMed Central | Abstract | Phylogenetic inference in Rafflesiales: the influence of rate heterogeneity and horizontal ...
The phylogenetic relationships among the holoparasites of Rafflesiales have remained enigmatic for over a century.
Our analyses indicate that the phylogenetic affinities of the large-flowered clade and Mitrastema, ascertained using mitochondrial matR, are congruent with results from nuclear SSU rDNA when these data are analyzed using maximum likelihood and Bayesian methods.
Rafflesiales are not monophyletic but composed of three or four independent lineages (families): Rafflesiaceae, Mitrastemonaceae, Apodanthaceae and Cytinaceae.
www.biomedcentral.com /1471-2148/4/40/abstract   (394 words)

  
 PBIO 450 Lecture Notes - Rosidae -- Spring 1998
I have already presented some comments on the relationships of the Rafflesiales.
In the previous section I indicated that in my view wherever go the Rafflesiales so go the Balanophorales, and as such the balanophores are not related to the sapindalean families where placed by Cronquist.
Thus, I restate my premise, wherever go the Rafflesiales so go the Balanophorales, a most curious group that can only be resolved as a unit.
www.life.umd.edu /emeritus/reveal/pbio/pb450/rosi14.html   (1020 words)

  
 Scott's Botanical Links--January 2002
Rafflesiales are strictly parasitic on roots or stems of other plants.
Most of the plant is underground, deriving nutrition from Tetrastigma, a member of the grape family, and the flowers are among the most foetid, attracting carrion flies as likely pollinators.
Rafflesiales are among the most highly modified of flowering plants, and once seen, quite memorable.
www.ou.edu /cas/botany-micro/bot-linx/jan02.shtml   (1471 words)

  
 Blarer, Albert*, Daniel L. Nickrent, and Peter K. Endress.   (Site not responding. Last check: 2007-10-31)
This is the first study on floral anatomy of Apodanthes and Berlinianche, and the first comparative study of all three genera of Apodanthaceae.
Among "Rafflesiales s.lat." Apodanthaceae include genera with solitary flowers less than a centimeter in diameter, whereas other families of "Rafflesiales s.lat." include taxa with flowers up to several tens of centimeters in diameter, or several flowers per inflorescence instead of solitary flowers, or a superior ovary.
Gynoecium structures of all three genera of Apodanthaceae share a half-inferior unilocular ovary and several simple, diffuse, more or less protruding parietal placentae and ovules with two well developed integuments.
www.botany2002.org /section2/abstracts/20.shtml   (166 words)

  
 Rafflesiales
[ Psilotales ] [ Rafflesiales ] [ Ranunculales ]
Vernacular names of plants within the Order Rafflesiales
For a description of the methodology followed in establishing this hierarchy see the note Nomenclature used in The Compleat Botanica.
www.crescentbloom.com /Plants/Ordo/Rafflesiales.htm   (67 words)

  
 Anderson Q&A   (Site not responding. Last check: 2007-10-31)
Remember when I showed that small phylogram for the mitochondrial matR gene for angiosperms?
Most of the Rafflesiales sequences--and a few non-parasitic angiosperms--had much longer branches than most of the other angiosperms.
Among-lineage heterogeneity in rates of molecular evolution can clearly occur in both plastid and nuclear genes.
www.life.uiuc.edu /sib/anderson_q&a.htm   (639 words)

  
 Molecular data place Hydnoraceae with Aristolochiaceae -- Nickrent et al. 89 (11): 1809 -- American Journal of Botany
Hydnoraceae in Rafflesiales, an order thought to be related
and stated, "In my opinion, the Rafflesiales are singularly
next order, Rafflesiales are related to the Aristolochiaceae,
www.amjbot.org /cgi/content/full/89/11/1809   (4554 words)

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