1. Keckiella: New name for Keckia straw (Scrophulariaceae)

   • Richard M. Straw

   OriginalPaper Pages: 203 - 204

2. Complex chemical variation and the taxonomy of Hymenoxys scaposa (Compositae)

   • Peter Seeligmann
   • R. E. Alston

   OriginalPaper Pages: 205 - 211

3. Some Umbelliferae of the Andean paramos of South America

   • Mildred E. Mathias
   • Lincoln Constance

   OriginalPaper Pages: 212 - 226

4. Kearnemalvastrum, a new genus of Malvaceae

   • David M. Bates

   OriginalPaper Pages: 227 - 236

5. The genera Amblostoma, Lanium, and Stenoglossum (Orchidaceae)

   • Robert L. Dressler

   OriginalPaper Pages: 237 - 243

6. Notes on Mexican grasses VII. New name for a dioecious endemic

   • John R. Reeder

   OriginalPaper Pages: 244 - 244

7. Hesperozygis pusilla (Labiatae), a new species from Mexico

   • Robert S. Irving

   OriginalPaper Pages: 245 - 247

8. An analysis of hybridization in Liatris

   • Donald A. Levin

   OriginalPaper Pages: 248 - 260

9. Novelties in Satureia sect. Gardoquia (Labiatae)

   • Rogers McVaugh
   • Rudolf Schmid

   OriginalPaper Pages: 261 - 267

10. Calyptocarpus vialis and C. wendlandii (Compositae)

    • Rogers McVaugh
    • Nancy J. Smith

    OriginalPaper Pages: 268 - 272

11. Variation of chromatographic spot patterns of two species of clonal plants grown under controlled environmental conditions

    • G. A. Ball
    • E. O. Beal
    • E. A. Flecker

    OriginalPaper Pages: 273 - 279

12. A new species of Dicentra from Burma

    • Kingsley R. Stern

    OriginalPaper Pages: 280 - 282

13. Commelina benghalensis, a species new to the United States

    • Wilbur H. Duncan

    OriginalPaper Pages: 282 - 282

14. Acacia macracantha, a tree new to Florida and the United States

    • Daniel B. Ward

    OriginalPaper Pages: 283 - 284

15. Biosystematic study of Berlandiera (Compositae)

    • Donald J. Pinkava

    OriginalPaper Pages: 285 - 298