Contents 



PART IV 



DISEASES OF ORNAMENTALS 



CHAPTER PAGE 



XVII. Alternanthera Diseases .... 200 



XVIII. Aster Diseases 207 



XIX. Carnation Diseases 217 



XX. Chrysanthemum Diseases .... 235 



XXI. Cyclamen Diseases 248 



XXII. Hyacinth Diseases . . . . . . 266 



XXIII. Lilac Diseases . 275 



XXIV. Orchid Diseases ....... 290 



XXV. Primrose Diseases 315 



XXVI. Sweet Pea Diseases 334 



XXVII. Tulip Diseases . 348 



PART V 

 greenhouse pests 



XXVIII. Plant Pests . 364 



XXIX. Greenhouse Thrips 369 



PART VI 

 methods of control 



XXX. Methods of Control 381 



