1. Editorial

   • Joachim W. Kadereit
   • Tod F. Stuessy

   EditorialNotes Pages: iv - iv

2. Sequence variation at theSec-1 locus of rye,Secale cereale (Poaceae)

   • B. C. Clarke
   • R. Appels

   OriginalPaper Pages: 1 - 14

3. P-type sieve-element plastids present in members of the tribesTriplareae andCoccolobeae (Polygonaceae) renew the links between thePolygonales and theCaryophyllales

   • H. -Dietmar Behnke

   OriginalPaper Pages: 15 - 27

4. Allozyme variation in relation to morphology and taxonomy inMedicago sect.Spirocarpos subsect.Intertextae (Fabaceae)

   • Ernest Small
   • Suzanne I. Warwick
   • Brenda Brookes

   OriginalPaper Pages: 29 - 47

5. The chloroplast genome arrangement ofLobelia thuliniana (Lobeliaceae): Expansion of the inverted repeat in an ancestor of theCampanulales

   • Eric B. Knox
   • Jeffrey D. Palmer

   OriginalPaper Pages: 49 - 64

6. Phylogenetic relationships ofPolemoniaceae inferred from 18S ribosomal DNA sequences

   • Leigh A. Johnson
   • Douglas E. Soltis
   • Pamela S. Soltis

   OriginalPaper Pages: 65 - 89

7. Pollen morphology ofSonchus and related genera, and a general discussion

   • M. J. Díez
   • J. A. Mejías
   • E. Moreno-Socías

   OriginalPaper Pages: 91 - 102

8. Collapse of species boundaries in the wild potatoSolanum brevicaule complex (Solanaceae, S. sect.Petota): Molecular data

   • Joseph T. Miller
   • David M. Spooner

   OriginalPaper Pages: 103 - 130

9. Genetic diversity inChaenomeles (Rosaceae) revealed by RAPD analysis

   • Igor V. Bartish
   • Kimmo Rumpunen
   • Hilde Nybom

   OriginalPaper Pages: 131 - 145

10. Molecular phylogeny ofCheirolophus (Asteraceae:Cardueae-Centaureinae) based on ITS sequences of nuclear ribosomal DNA

    • Alfonso Susanna
    • Teresa Garnatje
    • Núria Garcia-Jacas

    OriginalPaper Pages: 147 - 160

11. Therps16 intron and the phylogeny of theRubioideae (Rubiaceae)

    • Lennart Andersson
    • Johan H. E. Rova

    OriginalPaper Pages: 161 - 186

12. The bicolor unit — homology and transformation of an inflorescence structure unique to coreMalvales

    • Clemens Bayer

    OriginalPaper Pages: 187 - 198

13. Fossil pollen records of the problematical primitive angiosperm familyLactoridaceae in Australia

    • M. K. Macphail
    • A. D. Partridge
    • E. M. Truswell

    OriginalPaper Pages: 199 - 210

14. Genome characterization and relationships between two species of the genusLobelia (Campanulaceae) determined by repeated DNA sequences

    • A. L. L. Vanzela
    • A. Cuadrado
    • N. Jouve

    OriginalPaper Pages: 211 - 218

15. Genetic introgression between tetraploidDactylis glomerata subspp.reichenbachii andglomerata in the French Alps. Insight from morphological and allozyme variation

    • P. Gauthier
    • R. Lumaret
    • A. Bédécarrats

    OriginalPaper Pages: 219 - 234

16. Analysis of the genetic diversity of wild Spanish populations of the genusHordeum through the study of their endosperm proteins

    • A. De Bustos
    • C. Casanova
    • C. Soler

    OriginalPaper Pages: 235 - 249

17. Genomic in situ hybridization inArachis (Fabaceae) identifies the diploid wild progenitors of cultivated (A. hypogaea) and related wild (A. monticola) peanut species

    • S. N. Raina
    • Y. Mukai

    OriginalPaper Pages: 251 - 262