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 Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Cerastium dubium (Caryophyllaceae) New for the Eastern Half of North America (A Comparison with Sympatric Cerastium Species, including Cytological Data)

Paul Shildneck and Almut G. Jones
Castanea
Vol. 51, No. 1 (Mar., 1986), pp. 49-55
Published by: Allen Press on behalf of the Southern Appalachian Botanical Society
Stable URL: http://www.jstor.org/stable/4033446
Page Count: 7
  • Read Online (Free)
  • Download ($36.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Cerastium dubium (Caryophyllaceae) New for the Eastern Half of North America (A Comparison with Sympatric Cerastium Species, including Cytological Data)
Preview not available

Abstract

Extensive stands of Cerastium dubium (Caryophyllaceae) have been located in two contiguous counties (Effingham and Fayette) of central Illinois. This is only the second report of occurrence in North America and the first for the eastern half of the continent. A key is presented, in which this weedy species is compared with and distinguished from seven sympatric members of Cerastium growing in fields or ruderal habitats. Chromosome counts of five species are included, which support previous reports of a basic chromosome number of x = 18 (or 9?) for the genus. In contrast to the published meiotic number of n = 19 for European populations of C. dubium, we obtained n = 18 for the Illinois populations.

Page Thumbnails

  • Thumbnail: Page 
49
    49
  • Thumbnail: Page 
50
    50
  • Thumbnail: Page 
51
    51
  • Thumbnail: Page 
52
    52
  • Thumbnail: Page 
53
    53
  • Thumbnail: Page 
54
    54
  • Thumbnail: Page 
55
    55