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Topic: Geosiridaceae


  
  Encyclopedia
For this reason, and because of the complexity of the family, estimates of the number of orchid species vary from 15,000 to 25,000, and the number of genera from 400 to 800.
The family is placed in the order Orchidales with 3 smaller families—the Geosiridaceae, Burmanniaceae, and Corsiaceae—with a combined total of fewer than 150 species.
Orchids and their allies are distinguished from other orders of flowering plants by a combination of floral characteristics rather than by a single characteristic unique to the group.
www.historychannel.com /encyclopedia/article.jsp?link=FWNE.fw..or025400.a   (647 words)

  
 Madagascar, Royal Botanic Gardens, Kew: Science and Horticulture: Madagascar: Home Page
White (1983) identified eight endemic plant families out of a total of 191.
These were Asteropeiaceae, Didiereaceae, Didymelaceae, Diegodendraceae, Geosiridaceae, Humbertiaceae, Sphaerosepalaceae and Sarcolaenaceae.
Some of these family groups have since been revised as a result of phylogenetic studies (e.g.
www.rbgkew.org.uk /scihort/madagascar/overview.html   (776 words)

  
 Molecular systematics of Iridaceae: evidence from four plastid DNA regions -- Reeves et al. 88 (11): 2074 -- American ...
assigned to its own family Geosiridaceae (Jonker, 1939
Annals of the Missouri Botanical Garden 71: 1013-1020
Goldblatt P. Rudall V. Cheadle L. Dorr C. Williams 1987 Affinities of the Madagascan endemic Geosiris, Iridaceae or Geosiridaceae.
www.amjbot.org /cgi/content/full/88/11/2074   (6669 words)

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