1. Studies in the Capparidaceae—IV. Polanisia Raf

   • Hugh H. Iltis

   OriginalPaper Pages: 33 - 58

2. Cytogeography of the Dichanthium annulatum complex

   • Robert P. Celarier
   • K. L. Mehra
   • M. L. Wulf

   OriginalPaper Pages: 59 - 72

3. Some guiding principles of angiosperm phylogeny

   • Robert F. Thorne

   OriginalPaper Pages: 72 - 77

4. Anatomy and systematic position of Centaurodendron and Yunquea (Compositae)

   • Sherwin Carlquist

   OriginalPaper Pages: 78 - 93

5. Report of the committee for recommendations on desirable procedures in herbarium practice and ethics

   • Clarence E. Kobuski
   • Conrad V. Morton
   • Rolla M. Tryon

   Report Pages: 93 - 95

6. Notes and news

   • H. W. Rickett

   Announcement Pages: 95 - 96

7. Ninth International Botanical Congress nomenclature section dates

   Announcement Pages: xxiii - xxiii