1. Unusual chromosome pairing and B chromosomes inBriza spicata (Poaceae)

   • Brian G. Murray

   OriginalPaper Pages: 245 - 253

2. Biosystematic investigations on the lady fern(Athyrium filix-femina)

   • J. J. Schneller

   OriginalPaper Pages: 255 - 277

3. Evolution of mating systems inLycopersicon hirsutum as deduced from genetic variation in electrophoretic and morphological characters

   • Charles M. Rick
   • Jon F. Fobes
   • Steven D. Tanksley

   OriginalPaper Pages: 279 - 298

4. Breeding system and seed set inEuonymus europaeus (Celastraceae)

   • C. J. Webb

   OriginalPaper Pages: 299 - 303

5. Flower development inSpirodela polyrrhiza (Lemnaceae)

   • Božo Krajnčič
   • Zvonimir Devidé

   OriginalPaper Pages: 305 - 312

6. Pollination ofOpuntia lindheimeri and related species

   • Verne Grant
   • Karen A. Grant
   • Paul D. Hurd Jr.

   OriginalPaper Pages: 313 - 320

7. Pollination ofOpunta basilaris andO. littoralis

   • Verne Grant
   • Karen A. Grant

   OriginalPaper Pages: 321 - 325

8. Evolution of male sterility mechanisms in gynodioecious and dioecious species ofCirsium (Cynareae, Compositae)

   • Xavier Delannay

   OriginalPaper Pages: 327 - 332

9. Vier neue Arten der GattungJacaranda (Bignoniaceae) aus dem Südosten Brasiliens

   • Wilfried Morawetz

   Kurze Mitteilung Pages: 333 - 341

10. Richtigstellung betreffendSarcinochrysis granifera (Mack)Tsch.-Woess (Prymnesiophyceae)

    • Elisabeth Tschermak-Woess

    Kurze Mitteilung Pages: 343 - 345