544 



Subject Index 



Hyacinthus, 256 



Hydrostatic pressure, effect on structure, 



335 

 Hyoscyamus, 263, 264, 313, 322, 397, 



411, 432 

 Hyperplasia of tissues, 288 

 Hypertrophy of tissues, 288 

 Hyponasty as effect of growth substances, 



393 



Ideal angle in phyllotaxy, 152, 155 



Idioblasts, origin, 192 



Impatiens, 151 



Incompatibility between stock and scion, 



260, 263 

 Individual in plants, 24 

 Indoleacetic acid ( I AA ) , 376 

 Information theory and organization, 457 

 Inheritance, cell size, 418 



dimensions, 424 



dwarf habit, 418 



gametophytic characters, 426 



pattern, 423 



shape, 419 

 Inhibition, of buds, 387 



of one primordium by another, 160 



and stimulation in physiology, 103 

 Initiator cells in Acrasiaceae, 223 

 Intrusive growth, 82 

 Intumescences, 288 

 Ipomoea, 38, 107, 210, 262, 311, 321, 



337 

 Iresine, 261 

 Iris, 33, 169, 175, 355 

 Isoetes, 126, 132, 171 



Juncus, 279 



June drop of fruit caused by auxin, 98 



Jussiaea, 250 



Juvenile stages, 205, 206 



adapted to special environments, 217 



and recapitulation, 209 



reversal by gibberellic acid, 214 



Kalanchoe, 127, 240, 254, 255, 317, 319, 



321, 322, 396, 397, 445 

 Karyological plant anatomy, 445 

 Kinetin, 414 

 Kinoplasmosome, 80 

 Kohlrabi, reconstitution of tissue pattern 



in, 244 

 Krenke's theory of physiological age, 210 



Laburnum, 129 

 Lacunaria, 208 



Lagenaria, 51, 130, 421, 423 



Laminaria, 169, 233 



Lateral meristems, 79-88 



Lateral roots from convex side of main 



root, 385 

 Layering in meristem, 62 

 "Lazy" maize, 390 

 Leaf, development, 89 



primordium, changed to bud, 71 

 Least surface principle, 44 

 Leaves, effect on root formation, 393 

 Lecythis, 250 

 Light, 308-323 



duration, 314 



effect on reproduction, 315 



intensity, effect on structure, 309 



quality, effect, on differentiation, 314 

 on length growth, 313 



relation to other factors, 322 

 Ligustrum, 89 

 Lilium, 250, 256 

 Linaria, 176, 245, 282, 425 

 Linum, 157, 187, 245, 439 

 Liquid film theory, in cell form, 44-49 

 Livia, 279 

 Living root tips, cell division observed in, 



77 

 Long-day plants, 315 

 Luff a, 197, 201, 243, 250, 433 

 Lunularia, 121, 343 

 Lupinus, 69, 73, 160, 238 

 Lychnis, 221, 280, 368, 428 

 Lycopersicon, 34, 261 

 Lycopodium, 59, 171, 282 



Madura, 124 



Macromolecular pattern, 433 



Male and female tendencies, balance, 431 



Maleic hydrazide, 407 



Manoilov reaction, 221 



Marchantia, 121 



Marsilea, 332, 372 



Mechanical contact in phyllotaxy, 345 



Mechanical factors, morphogenetic effects, 



345 

 Meiosis, in Acrasiaceae, 224 



in somatic cells, 274 

 Melandrium, 365, 400, 428-430 

 Melilotus, 263 



Mercurialis, 185, 263, 317, 399, 400 

 Meristematic center in root, 77 

 Meristematic cells as genetic reserve, 232 

 Meristemoids, 201 

 Meristems, 4, 12, 55-91 



apical, 56-79 



determinate, 88-91 



differentiation in culture, 75 



diffuse, 13 





