INDEX 



557 



Pilayella (brown alga), 63, 280 



Piloholus (fungus), 165 



Pilularia (pteridophyte) , 233, 437 



Pincus, 378 



Pinney, 136, 141, 412 



Pinnotheres (crustacean), 222 



Pinus (gymnosperm) , 57, 207, 208, 235, 342 



Pisciola (leech), 156 



Pisum (pea), aleurone, 101 



chondriosomes, 83, 90 



chromosome complement, 124 



hybrids, 360 



leucoplast, 62 



Mendel's work 287-289, 296 



reciprocal translocation, 329, 331 



root hairs, 60 

 Pits, 175 



Plantago (angiosperm) , 357 

 Plantefol, 90 



Plasma membrane, 2, 39, 172 

 Plasma theory, 436 

 Plasmodermal blepharoplast, 67, 198 

 Plasmodesms, 16, 17, 22 

 Plasmodial theory, 436 

 Plasmodial tissues, 10, 22 

 Plasmodiophora (myomycete), 190, 278 

 Plasmodium, 171 

 Plasmogamy, 231 

 Plasmolemma, 39 

 Plasmon, 418, 419 

 Plasmosome, 2, 57 

 Plastid, 3, 61-72, 80, 279 



and chondriosomes, 90-92 



development, 417 



and Golgi material, 80, 81 



individuality, 70 ff. 



origin, 69 ff. 



primordia, 69, 70, 101 



in syngamy, 233, 234 



in zygospore, 279 

 Plastidome, 61 

 Plastomere, 199 

 Plastonema, 70 

 Plastosome, 70 

 Platypcecilus (fish), 381, 393 

 Plethodon (amphibian), 215, 217 

 Pleurage (fungus), 387 

 Plough, 295, 302, 311 

 Plowe, 39, 40, 42 

 Plumbagdla (angiosperm), 212 

 Plus and minus strains, 231, 232 

 Poddubnaja, 210 



FodophyUum (angiosperm), 133, 134, 139 

 Pogonatum (angiosperm), 385 

 Poirault, 16 

 Polar bodies. 213, 263 

 Polar caps, 149, 160 

 Polar-fusion nucleus, 238 

 Polar nuclei, 210, 211, 237 

 Polarity, 20, 75, 180, 185 

 Polarized light, 84, 98, 99, 178 

 Pole field, 108 

 Polianthes (angiosperm), 66 

 Policard, 84, 91 

 Politis, 66 



Politzer, 187 

 Poljansky, 192 

 Pollack, 29 

 Pollen, characters, 308 



grain, 174 



tube, 208, 209, 235, 237, 293, 436, 437 



wall, 180 

 Pollination, 237 

 Pollister, 78, 155, 215, 216, 220 

 Polocyte, 213 

 Polyembryony, 382, 405 

 Polygonum (angiosperm), 342 

 Polyploidy (see also Heteroploidy) , 125, 130, 339 



in animals, 396 



and apomixis, 408 



in gametophyte, 343, 357, 395 



and heredity, 350 ff. 



and meiosis, 274 



and size, 356, 357 

 Polypodium (fern), 138 

 Polysiphonia (red alga), centrospheres, 169 



furrowing, 165 



gametes, 196, 197 



meiosis, 280 



sex, 386 



syngamy, 227, 229 



zoospores, 198 

 Polyspory, 361, 362 

 Polystichuni (fern), 404, 405 

 Polytoma (green alga), 62, 223 

 Polytrichum (moss), 70, 71, 80, 202, 203, 283 

 Poole, 367 

 Popa, 221 



Popoff, 51, 186, 194, 247, 277 

 Popovici, 102 



Populus (angiosperm), 389, 390, 397 

 Porphyra (red alga), 68 

 Portier, 89 



Postmeiotic division, 265 

 Postreduction, 254 

 Potentilla (angiosperm), 340, 407 

 Powell, 190, 223 

 Powers, 121, 342 

 Prdt, 192 

 Pratje, 25 

 Preformation, 424 

 Preissia (liverwort), 233 

 Prell, 401 



Premeiotic mitosis, 272 

 Prenant, 93, 160 

 Prereduction, 254 

 Preston, 178 

 Prevost and Dumas, 438 

 Priestley, 176 

 Primary constriction, 116 

 Primary mutant, 327 

 Primordial utricle, 430 

 Primula (angiosperm), chiasma, 270 



gametes, 210 



heteroploidy, 351, 352, 357 



hybrids, 367 



meiosis, 267, 274 



variegation, 415, 416 

 Principal piece, 221, 222 

 Pringsheim, 437 



