f flowers on spines, 177--Of
flower-buds on petals, 177--On fruits, 178--In ovaries, 180--Of
stamens in ovaries, 182--Of pollen in ovules, 185--Homomorphic
flowers of Compositae, 188--Heterotaxy affecting the
inflorescence, 188--Supra-soriferous ferns, 190.

CHAPTER IV.

HETEROGAMY 190

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

ALTERATIONS IN THE DIRECTION OF ORGANS 201

Fastigiation, 202--Eversion, 204--Altered direction of leaves,
205--Altered direction of flower, 206--Reflexion,
209--Gymnaxony, 211.

BOOK II.

DEVIATIONS FROM ORDINARY FORM 213

PART I.--STASIMORPHY 216

CHAPTER I.

PERSISTENCE OF JUVENILE FORMS 217

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

PART II.--PLEIOMORPHY 228

CHAPTER I.

IRREGULAR PELORIA 228

PART III.--METAMORPHY 240

CHAPTER I.

PHYLLODY 241

Phyllody of bracts, 242--In inflorescence of Conifers, 245--Of
calyx, 245--Of corolla, 251--Of stamens, 253--Of pistils,
256--Of ovules, 262--Changes in nucleus of ovule, 269--Phyllody
of accessory organs, 272--Chloranthy, 273--General remarks on,
278.

CHAPTER II.

METAMORPHY OF FLORAL ORGANS 281

Sepalody of petals, 282--Petalody of calyx, calycanthemy,
283--Petalody of stamens, 285--Of anther, 291--Of connective,
293--Compound stamens, 294--Petalody of pistils, 296--Of ovules,
297--Of accessory organs, 297--Staminody of the bracts, 298--Of
sepals and petals, 298--Of pistils, 299--Of accessory organs,
301--Pistillody of perianth, 302--Of sepals, 302--Of stamens,
303--Of ovules, 310.

PART IV.--HETEROMORPHY 311

CHAPTER I.

DEFORMITIES 311

Formation of tubes, 312--In flower, 314--Spurs, 315--Contortion,
316--Spiral torsi