TABLE OF CONTENTS. IX 



CHAPTER III. 



PA OB 



Heteeotaxy ...... 156 



Formation of adventitious roots, 156 Of shoots below the 

 cotyledons, 161 Adventitious leaves, 162 On scapes, 163 

 Production of leaves or scales in place of flower-buds, 164 

 Viviparous plants, 168 Formation of buds on leaves, 170 In 

 pith, 171 On bulbs, 172 Production of gemms9 in place of 

 spores, 173 Of flowers on leaves, 174 Of flower- buds in place 

 of leaf-buds, 176 Of flowers on spines, 177 Of flower-buds on 

 petals, 177 On finiits, 178 In ovaries, 180 Of stamens in 

 ovaries, 182 Of pollen in ovules, 185 Homomorphic flowers 

 of Compositse, 188 Heterotaxy affecting the inflorescence, 188 

 Supra-soriferous ferns, 190. 



CHAPTER IV. 

 Heteeogamy ...... 190 



Change in the position of male and female flowers, 191 From 

 moncEcious to dioecious condition, 193 From dioecious to 

 monoecious, 193 From hermaphroditism to unisexuality, 195 

 From unisexuality to hermaphroditism, 197 Pollen replaced 

 by ovules, 201. 



CHAPTER V. 



ALTEIiATIONS in the DIBECTION of OEOAN8 . 201 



Fastigiation, 202 Eversion, 204 Altered direction of leaves, 

 205 Altered direction of flower, 206 Reflexion, 209 

 Gynmaxony, 211. 



BOOK II. 



DEVIATIONS FROM ORDINARY FORM . 213 



PART I. Stasimorphy .216 



CHAPTER I. 



Peesistence of juvenile foems .... 217 



Stasimorphy in leaves of Conifers, 217 Regular peloria, 219. 



