CONTENTS 



XX. IMPERFECT, INCOMPLETE, IRREGULAR, AND UNSYM- 



METRICAL FLOWERS 90 



XXI. COALESCENCE AND ADNATION 93 



XXII. WIND- AND INSECT-POLLINATION .... 95 



XXIII. SELF-POLLINATION 100 



XXIV. ANTHOTAXY 101 



XXV. METAMORPHOSIS 106 



XXVI. FRUITS 109 



XXVII. FLESHY FRUITS in 



XXVIII. DRY DEHISCENT FRUITS 116 



XXIX. DRY INDEHISCENT FRUITS 120 



XXX. SEED DISPERSAL BY ANIMALS . . . . .121 



XXXI. SEED DISPERSAL BY WIND 123 



XXXII. SEED DISPERSAL BY WATER 125 



XXXIII. SPORE REPRODUCTION 126 



APPENDIX I. SUGGESTIONS TO STUDENTS . . . .131 

 APPENDIX II. SUGGESTIONS TO TEACHERS . . . .137 

 INDEX 183 



