on, 319--Of leaf, 326--Adventitious tendrils,
326--Interrupted growth, 327--Cornute leaves, 328--Flattening,
328.

CHAPTER II.

POLYMORPHY 329

Heterophylly, 330--Dimorphism, 333--Sports or bud-variations,
336.

CHAPTER III.

ALTERATIONS OF COLOUR 337

Albinism, 337--Virescence, 338--Chromatism, 339.

BOOK III.

DEVIATIONS FROM ORDINARY NUMBER 340

PART I.--INCREASED NUMBER OF ORGANS 343

CHAPTER I.

MULTIPLICATION OF AXILE ORGANS--INFLORESCENCE 346

Multiplication of branches, 346--Plica, 346--Polyclady,
347--Multiplication of branches of inflorescence, 348--Of bulbs,
350--Of florets, 351.

CHAPTER II.

MULTIPLICATION OF FOLIAR ORGANS 352

Pleiophylly, 353--Multiplication of stipules, bracts, &c.,
357--Polyphylly, 358--Increased number of leaves in a whorl,
358--Polyphylly of bracts, 358--Of calyx, 358--Of corolla,
359--Of androecium, 361--Of gynoecium, 363--Of flower in
general, 365--Increased number of ovules and seeds, 367--Of
embryos, 369--Of cotyledons, 370--Pleiotaxy, or multiplication
of whorls, 371--Pleiotaxy of bracts, 371--Of calyx, 374--Of
perianth, 375--Of corolla (hose in hose), 376--Androecium,
379--Androecium of Orchids, 380--Pleiotaxy of gynoecium,
388--Increased number of flowers in an inflorescence, 391.

PART II.--DIMINISHED NUMBER OF ORGANS 392

CHAPTER I.

SUPPRESSION OF AXILE ORGANS 393

Acaulosia, 393--Non-development of peduncle, 393--Nature of
calyx-tube (Casimir de Candolle), 394--Suppression of columella,
395.

CHAPTER II.

SUPPRESSION OF FOLIAR ORGANS 395

Aphylly, 395--Meiophylly, 396--Of calyx or perianth, 396--Of
corolla, 397--Of androecium, 398--Of gynoecium, 399--Of
flower, 400--Meiotaxy, 403--Of calyx, 403--Of corolla, 403--Of
androecium, 405--Of gynoecium, 406--Of ovules or seeds,
407--Of flower, 408--General remarks on suppression, 409.

BOOK IV.

DEVIATIONS FROM ORDINARY SIZE AND CONSISTENCE 413

PART I--HYPERTROPHY 416

CHAPTER I.

ENLARGEMENT 417

Of axile organs, 418--Knau