8 CONTENTS 



PAGE 



CHAPTER XVII 



DISPERSAL OF FRUITS AND SEEDS 



Colonization of a barren island by plants. Means of dispersal 



by wind, water, animals, and propulsive mechanisms . .219 



PART III. SYSTEMATIC BOTANY 



CHAPTER XVIII 

 CLASSIFICATION OF PLANTS 



History of systematic botany. The chief divisions of Flower- 

 ing Plants. The study of a local flora .... 229 



CHAPTER XIX 



DICOTYLEDONS : A. ARCHICHLAMYDEAE 



Natural orders : Salicaceae ; Betulaceae ; Fagaceae ; Ranun- 

 culaceae ; Cruciferae ; Caryophyllaceae ; Rosaceae ; Papi- 

 lionaceae ; Umbelliferae ....... 234 



CHAPTER XX 



DICOTYLEDONS : B. METACHLAMYDEAE 



Natural orders : Primulaceae ; Boraginaceae ; Labiatae ; 

 Solanaceae ; Scrophulariaceae ; Caprifoliaceae ; Compositae 248 



CHAPTER XXI 



MONOCOTYLEDONS 



Natural orders : Gramineae ; Liliaceae ; Amaryllidaceae ; 

 Iridaceae ; Orchidaceae ....... 264 



PART IV. COMMON TREES AND SHRUBS 



CHAPTER XXII 



CONE-BEARING TREES 



Scots Pine and Larch ....... 270 



CHAPTER XXIII 



CATKIN-BEARING TREES 



Willow, Poplar, Hazel, Birch, Alder, Beech, and Oak . . 276 



