Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Evolution and Biogeography of Saxifragaceae with Guidance from Their Rust Parasites

D. B. O. Savile
Annals of the Missouri Botanical Garden
Vol. 62, No. 2 (1975), pp. 354-361
DOI: 10.2307/2395201
Stable URL: http://www.jstor.org/stable/2395201
Page Count: 8
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Evolution and Biogeography of Saxifragaceae with Guidance from Their Rust Parasites
Preview not available

Abstract

A lineage of short-cycled rusts, Puccinia species, is recorded on 10 genera and 86 species of Saxifragaceae, including 10 sections and various subsections of Saxifraga. These rusts can be arranged approximately in evolutionary sequence. From the rust data it is inferred that Saxifragaceae originated in eastern Asia; migrants radiated early in the Himalayan Region and western North America; a return migrant from North America established Saxifraga in or near Japan; migrants from Japan established slightly advanced Saxifraga groups in the Himalayas and western North America; migrants from the Himalayas (related to Melanocentrae) established moderately advanced Saxifraga groups in Europe and North America; finally Himalayan migrants (related to sect. Kabschia) established sect. Trachyphyllum in Beringia and sects. Xanthizoon, Euaizoonia and Porphyrion in the Alps. These last sections probably evolved during the Pleistocene.

Page Thumbnails

  • Thumbnail: Page 
[354]
    [354]
  • Thumbnail: Page 
355
    355
  • Thumbnail: Page 
356
    356
  • Thumbnail: Page 
357
    357
  • Thumbnail: Page 
358
    358
  • Thumbnail: Page 
359
    359
  • Thumbnail: Page 
360
    360
  • Thumbnail: Page 
361
    361