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.

Ultrastructure of Cymbella sinuata and its Allies (Bacillariophyceae), and Their Transfer to Reimeria, Gen. Nov.

John P. Kociolek and Eugene F. Stoermer
Systematic Botany
Vol. 12, No. 4 (Oct. - Dec., 1987), pp. 451-459
DOI: 10.2307/2418882
Stable URL: http://www.jstor.org/stable/2418882
Page Count: 9
  • Read Online (Free)
  • Download ($12.00)
  • 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.
Ultrastructure of Cymbella sinuata and its Allies (Bacillariophyceae), and Their Transfer to Reimeria, Gen. Nov.
Preview not available

Abstract

Light and scanning electron microscopy are employed to describe the ultrastructure of Cymbella sinuata and allied taxa. Observations show the C. sinuata group shares features of valve symmetry and number of apical pore fields with members of the genus Cymbella s. str., while having raphe, striae, and stigmal features similar to Gomphonema species. The features shared between the C. sinuata group and Cymbella appear to be symplesiomorphies, while the group lacks apomorphic features characteristic of Gomphonema. These observations, in addition to a unique construction of the apical pore fields in the C. sinuata group, suggest its placement in a new genus, Reimeria. Features of the new genus are described and its systematic position discussed. A new fossil species, R. lacus-idahoensis is proposed.

Page Thumbnails

  • Thumbnail: Page 
451
    451
  • Thumbnail: Page 
452
    452
  • Thumbnail: Page 
453
    453
  • Thumbnail: Page 
454
    454
  • Thumbnail: Page 
455
    455
  • Thumbnail: Page 
456
    456
  • Thumbnail: Page 
457
    457
  • Thumbnail: Page 
458
    458
  • Thumbnail: Page 
459
    459