67
in place of pollen, 200
polliniferous, 183
petalody of, 297
phyllody of, 262
pistillody of, 310
suppression of, 407
malformations of, 262
bibliography of, 272

P.

Parasitical plants, 55

Peduncles, elongation of, 435

Peloria, 207, 228
bibliography of, 227, 239
regular, 219
plants subject to, 226
irregular, 229
plants, subject to, 239

Perianth, abortion of, 460
enlargement of, 428
meiophylly of, 396
pistillody of, 303
pleiotaxy of, 375

Persistence, xxxvi _adnot._, 217

Petalody, 283
of accessory organs, 297
anther, 291
calyx, 283
connective, 292
ovules, 297
pistils, 297
stamens, 284
plants, subject to, 295

Petals, cohesion of, 28
enation from, 448
fission of, 66
phyllody of, 251
staminody of, 298
tubular, 23, 314

Phyllode, 328

Phyllody, 240 (see Virescence, Chloranthy)
of accessory organs, 272
bracts, 242
calyx, 244
plants subject to, 250
in Conifers, 245
of corolla, 251
plants subject to, 252
of ovules, 262
plants subject to, 271
pistils, 256
plants subject to, 261
stamens, 253
plants subject to, 256

Phyllomania, 352

Phyllomorphy, see Phyllody

Phyllotaxy, 1, 320

Pistil, abortion of, 464
cohesion of, 29
petalody of, 296
staminody of, 298

Pistillody, 302
of ovules, 268, 310
perianth, 302
sepals, 302
stamens, 303
plants subject to, 310

Pitchers, 30, 313, 509, see Ascidia

Placentation, changes in, 96, 508
bibliography, 100
nature of, 483

Placenta, elongation of, 439
enlargement of, 421

Pleiomorphy, 228

Pleiophylly, 353

Pleiotaxy, 371
of androecium, 375
bracts, 371
calyx, 374
corolla, 376
gynoecium, 388
perianth, 375

Plien, 346

Plymouth Strawberry, 275

Polyadelphia, 29

Pollen in ovules, 183
abortion of, 463
replaced by ovules, 200

Polyclady, 346

Polycotyledony, 370

Polyembryony, 369

Polymorphy, 328

Polyphylly of androecium, 361
of calyx, 350
corolla, 359
plants subject to, 360
of flower, 363
gynoecium, 363

Polyphylly, bibliography, 364
plants subject to, 364

Position, changes of, 83
relative, 485

Prolification, 100
axillary, 138
foliar, 141
floral, 142
plants affected with, 148
bibliography of, 154
complicated, 151
of embryo, 155
of flower, 115
coincident changes,