1. Lloyd Herbert Shinners—A portrait

   • Donovan S. Correll

   OriginalPaper Pages: 101 - 104

2. Notes on Mexican grasses IX. Miscellaneous chromosome numbers—3

   • John R. Reeder

   OriginalPaper Pages: 105 - 117

3. New taxa of compositae (Eupatorieae) from Brazil

   • G. M. Barroso
   • R. M. King

   OriginalPaper Pages: 118 - 121

4. Notice to ASPT members

   • Lorin I. Nevling

   Announcement Pages: 122 - 122

5. A Revision of ageratina (Compositae: Eupatorieae) from eastern North America

   • Andre F. Clewell
   • Jean W. Wooten

   OriginalPaper Pages: 123 - 143

6. Notice

   • Howard J. Teas

   Announcement Pages: 143 - 143

7. New species of carex from Mexico and Guatemala

   • Frederick J. Hermann

   OriginalPaper Pages: 144 - 148

8. A taxonomic revision of granite outcrop species of Minuartia (Arenaria)

   • J. Frank McCormick
   • John R. Bozeman
   • Stephen Spongberg

   OriginalPaper Pages: 149 - 160

9. A biosystematic study of Coreopsis tinctoria and C. cardaminefolia (Compositae)

   • Edwin B. Smith
   • Hampton M. Parker

   OriginalPaper Pages: 161 - 170

10. Chromosome numbers in some cacti of western North America

    • Donald J. Pinkava
    • Malcolm G. McLeod

    OriginalPaper Pages: 171 - 176

11. Systematic relationships in the white-rayed species of Melampodium (Compositae)

    • Tod F. Stuessy

    OriginalPaper Pages: 177 - 190

12. C. S. Rafinesque’s North American vascular plants at the Academy of Natural Sciences of Philadelphia

    • Ronald L. Stuckey

    OriginalPaper Pages: 191 - 208

13. Hybridization between Senecio smallii and S. tomentosus (Compositae) on the granitic flatrocks of the Southeastern United States

    • G. Caywood Chapman
    • Samuel B. Jones

    OriginalPaper Pages: 209 - 216

14. The systematics of Rigidella (Iridaceae)

    • Robert W. Cruden

    OriginalPaper Pages: 217 - 225