1. On Ö. Winge and a Prayer: The origins of polyploidy

   • Jack R. Harlan
   • J. M. J. deWet

   OriginalPaper Pages: 361 - 390

2. Primary, preventive and permissive roles of hormones in plant systems

   • Anwar A. Khan

   OriginalPaper Pages: 391 - 420

3. Environmental influences on cuticle development and resultant foliar penetration

   • H. M. Hull
   • H. L. Morton
   • J. R. Wharrie

   OriginalPaper Pages: 421 - 452

4. The succession of Australian pre-tertiary megafossil floras

   • R. E. Gould

   OriginalPaper Pages: 453 - 483

5. The New York Botanical Garden Announces A Symposium in Commemoration of the Bicentennial of the United States

   Announcement Pages: N1 - N1