CONTENTS

Translator's Notes                                                                     5
     List of Retained Local Terms                                                      6

Foreword to the English Edition                                                        8

Foreword                                                                               9
     Acknowledgments                                                                  12

Part One: General Overview                                                            14
     Chapter 1. Willow Systematics in Russia and Adjacent Countries: 
         A Brief Historical Essay                                                     14
              1. Epoch of Linnaeus                                                    14
              2. Late 18th"first Third of 19th Century in Western Europe: 
         Numerous Descriptions of New Species                                         15
              3. Stabilization of Species Number in Western Europe: 
         From Koch to Wimmer and Buser                                                17
              4. Late 19th"the end of the 30's of 20th Century in Western Europe:
         In Search of Hybrids. Understanding Species in the Sense of Ascherson        19
              5. In Russia and the USSR: from Trautvetter to Nazarov                  21
              6. Japanese School                                                      23
              7. After World War II: the USSR and Western Europe                      24
     Chapter 2. Material and Methods                                                  26
              1. Notion of Species that the Author Complies with                      26
              2. Observations in Nature                                               30
              3. Herbarium Material                                                   32
              4. Observations of Cultivated Plants                                    34
              5. Compilation of Species Distribution Maps                             35
              6. Nomenclature, Authentic Specimens, Synonymy                          35
     Chapter 3. Ecology and Morphology                                                38
              1. Delimiting and General Morphological Description of the Genus Salix  38
              2. Ecology                                                              41
              3. Morphological Characters with Respect to Individual Organs: 
                 an Overview                                                          44
              4. Variability and Taxonomical Values of Characters                     58
              5. Interspecific Hybridization                                          64
     Chapter 4. Evolution and Phylogeny                                               74
              1. Morphological Evolution                                              74
              2. Phylogenetic Relations between Major Taxonomical Groups: 
         A Trial Reconstruction                                                       81
              3. Distributional Types of Species                                      86
              4. Historical Development of the Genus: Major Features                  94

Part Two: Systematic Overview                                                         99
     Key to Sections                                                                  99
     Subgenus Salix                                                                  103
              Sect. 1. Humboldtianae                                                 103
              Sect. 2. Amygdalinae                                                   104
              Sect. 3. Urbanianae                                                    109
              Sect. 4. Pentandrae                                                    110
              Sect. 5. Salix                                                         113
              Sect. 6. Subalbae                                                      119
     Subgenus Chamaetia                                                              123
              Sect. 7. Chamaetia                                                     123
              Sect. 8. Retusae                                                       126
              Sect. 9. Myrtilloides                                                  133
              Sect. 10. Glaucae                                                      136
              Sect. 11. Myrtosalix                                                   146
     Subgenus Vetrix                                                                 157
              Sect. 12. Hastatae                                                     157
              Sect. 13. Glabrella                                                    160
              Sect. 14. Nigricantes                                                  164
              Sect. 15. Vetrix                                                       167
              Sect. 16. Arbuscella                                                   188
              Sect. 17. Vimen                                                        203
              Sect. 18. Subviminales                                                 214
              Sect. 19. Canae                                                        214
              Sect. 20. Villosae                                                     215
              Sect. 21. Lanatae                                                      220
              Sect. 22. Daphnella                                                    223
              Sect. 23. Incubaceae                                                   229
              Sect. 24. Flavidae                                                     233
              Sect. 25. Helix                                                        234
              Sect. 26. Cheilophilae                                                 252

Bibliography                                                                         255

Additions to Bibliography                                                            270
     Most Important Publications on Salix since 1968                                 270
     Author's Publications on Salix since 1968                                       271

Index to Willow Taxa                                                                 272
              Genera, Subgenera, Sections, and Subsections                           272
              Species, Subspecies, and Varieties                                     272

Willow Species Described since 1966 from the Area Treated in the Book                278

Index to Geographical and Local Names                                                279