1. Asphodelus tenuifolius andA. fistulosus (Liliaceae) are morphologically, genetically, and biologically different species

   • C. Ruiz Rejon
   • G. Blanca
   • M. Ruiz Rejon

   OriginalPaper Pages: 1 - 12

2. Intraspecific chromosomal polymorphism ofTriticum araraticum (Poaceae) detected by C-banding technique

   • E. D. Badaeva
   • R. L. Boguslavsky
   • A. V. Zelenin

   OriginalPaper Pages: 13 - 24

3. Chromosome number of theOxalis tuberosa alliance (Oxalidaceae)

   • Daniel de Azkue
   • Arturo Martínez

   OriginalPaper Pages: 25 - 29

4. Chemo- and karyotaxonomic studies on some rhizomatous species of the genusSymphytum (Boraginaceae)

   • T. A. Jaarsma
   • E. Lohmanns
   • T. M. Malingré

   OriginalPaper Pages: 31 - 39

5. Allozyme and life history variation in five northwardly colonizing North American weed species

   • Suzanne I. Warwick

   OriginalPaper Pages: 41 - 54

6. A natural hybrid ofMonophyllaea (Gesneriaceae) in the tropical rain forests of West Sumatra

   • Hiroshi Okada

   OriginalPaper Pages: 55 - 63

7. Buzz-pollination in three nectariferousBoraginaceae and possible evolution of buzz-pollinated flowers

   • Reuven Dukas
   • Amots Dafni

   OriginalPaper Pages: 65 - 68

8. Cytogenetic investigations onOenothera nutans (Onagraceae)

   • Otto Wasmund

   OriginalPaper Pages: 69 - 80

9. Phylogenetic relationships and gene flow between sympatric diploid and tetraploid plants ofDactylis glomerata (Gramineae)

   • Roselyne Lumaret
   • Edilberto Barrientos

   OriginalPaper Pages: 81 - 96

10. Investigations into the evolutionary history of theAntennaria rosea (Asteraceae: Inuleae) polyploid complex

    • Randall J. Bayer

    OriginalPaper Pages: 97 - 110

11. Pollen amino acids—an additional diet for a nectar feeding butterfly?

    • A. Erhardt
    • I. Baker

    OriginalPaper Pages: 111 - 121