1. The North American perennial species of Claytonia

   • Ray J. Davis

   OriginalPaper Pages: 285 - 303

2. Two new species of Halophila (hydrocharitaceae)

   • Maxwell S. Doty
   • Benjamin C. Stone

   OriginalPaper Pages: 303 - 306

3. Some additions and corrections to the flora of Texas—II

   • Donovan S. Correll

   OriginalPaper Pages: 306 - 310

4. The biota of long-distance dispersal. III. Loss of dispersibility in the Hawaiian flora

   • Sherwin Carlquist

   OriginalPaper Pages: 310 - 335

5. A new species of Phyllanthus (euphorbiaceae) from Central America

   • Grady L. Webster

   OriginalPaper Pages: 336 - 342

6. A new species of Oryzopsis (Gramineae) from Wyoming

   • Yaakov Shechter
   • B. Lennart Johnson

   OriginalPaper Pages: 342 - 347

7. Filarum, a new genus of peruvian Araceae

   • Dan H. Nicolson

   OriginalPaper Pages: 347 - 349

8. The distribution and taxonomy of three western Junipers

   • Frank C. Vasek

   OriginalPaper Pages: 350 - 372

9. Chromosome numbers in the Euphorbiaceae

   • Kim I. Miller
   • Grady L. Webster

   OriginalPaper Pages: 372 - 379

10. A revision of the Hawaiian species of Elaphoglossum

    • W. R. Anderson
    • M. R. Crosby

    OriginalPaper Pages: 380 - 397

11. International Conference on Systematic Biology

    Announcement Pages: 398 - 398