1. The Piperaceae—A family profile

   • T. G. Yuncker

   OriginalPaper Pages: 1 - 7

2. Clarkia franciscana, a new species from Central California

   • Harlan Lewis
   • Peter H. Raven

   OriginalPaper Pages: 7 - 13

3. Dimorphism in the fruits of Plectritis, and its taxonomic implications

   • Lauramay T. Dempster

   OriginalPaper Pages: 14 - 28

4. Studies in tropical american leguminosae —IV

   • Richard S. Cowan

   OriginalPaper Pages: 28 - 31

5. Two dominican stellarias

   • Bassett Maguire

   OriginalPaper Pages: 32 - 32