Introduction 1

1. General data 3
1.1. The study area. 3
1.2. Geology.
1.3. Soils. 6
1 .4. Climate. 7
1.5. Vegetation. 11
2. Materials and methods 12
2.1. Sampling. 12
2.2. Preparation techniques. 22
2.3. Examination of the material. 22
3. General data on the sampling stations 24
4. Systematical part 27
4.1. Species list 33
5. Final remarks 165
6. References 167
Species index 191