1. Forum

   • Tomáš Herben
   • Milan Chytrý

   EditorialNotes Pages: 355 - 355

2. The calcareous riddle: Why are there so many calciphilous species in the Central European flora?

   • Jörg Ewald

   OriginalPaper Pages: 357 - 366

3. Changes in species density along the soil pH gradient — evidence from German plant communities

   • Brigitte Schuster
   • Martin Diekmann

   OriginalPaper Pages: 367 - 379

4. Species richness and soil reaction in a Northeastern Oklahoma landscape

   • Michael W. Palmer
   • José Ramón Arévalo
   • Peter G. Earls

   OriginalPaper Pages: 381 - 389

5. Variation in species richness and species pool size across a pH gradient in forests of the southern Blue Ridge Mountains

   • Robert K. Peet
   • Jason D. Fridley
   • Joel M. Gramling

   OriginalPaper Pages: 391 - 401

6. pH optima for Danish forest species compared with Ellenberg reaction values

   • Jonas Erik Lawesson

   OriginalPaper Pages: 403 - 418

7. Some ecophysiological and historical approaches to species richness and calcicole/calcifuge behaviour — contribution to a debate

   • Germund Tyler

   OriginalPaper Pages: 419 - 428

8. Local and regional patterns of species richness in Central European vegetation types along the pH/calcium gradient

   • Milan Chytrý
   • Lubomír Tichý
   • Jan Roleček

   OriginalPaper Pages: 429 - 442

9. Calcicole plant diversity in Switzerland may reflect a variety of habitat templets

   • Thomas Wohlgemuth
   • Andreas Gigon

   OriginalPaper Pages: 443 - 452

10. On the possible role of local effects on the species richness of acidic and calcareous rock grasslands in northern Hungary

    • Tamás Rédei
    • Zoltán Botta-Dukát
    • Tibor Tóth

    OriginalPaper Pages: 453 - 467