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 torsion, 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.