612 



INDEX, 



Plumbagineae, 379- 

 Plum, 435. 

 Plumula, 270. 

 Plumule, 418. 

 Poa annua, 501. 



vivipara, 314. 

 Podocarpus, 385. 

 Podostemon, 169, 300, 355. 



Ceratophyllum, 406. 

 Pollen, 296, 467. 



cells, contents of, 358. 



formation of, 355. 



grains, 109, 530. 



granule, 357, 408. 

 change of, 402. 



membrane, 357. 



tube, examination of, 408. 



tubes in contact with nectar, 408. 



tubes, branched, 408. 

 Polygala, 331. 

 Polygonaceas, 271, 272. 

 Polygonum divaricatum, 393. 



Fagopyrum, 497. 



tinctorium, 26. 

 Poly ides lumbricalis, 548. 

 Polypodium ramosum, 58. 

 Polyporus, 152. 



igniarius, 538. 

 Polysperma, 7. 



glomerata, 104, 146. 

 Polytrichoideae, 182. 

 Polytrichum, 171, 186. 

 Pomeae, 369. 

 Pomegranate, 227. 

 Pomum, 449. 

 Pontederia crassipes, 278. 

 Poplar, 46. 

 Populus, 319. 



dilatata, 263. 



Position of plants on soil, 259. 

 Potamogeton, 64, 94. 



lucens, 418. 

 Potassium, 4. 

 Potato, 18, 111, 292. 



starch, 11. 



effects of heat on, 1 3. 

 Potentilla, 259, 319, 345. 

 Pothos, 27 1. 



adventitious roots of, 218. 



crassinervis, 75. 79. 



reflexa, 419. 

 Pouches, 266. 

 Punctatus, 135. 

 Punctum vegetationis, 57. 

 Punica granatum, 428. 

 Pyrenomycetes, 145, 157, 159. 

 Pyrenothalami, 1.59. 

 Preissia commutata, 92, 174. 

 Primary cell, 121. 

 Primulacea?, 314, 384. 

 Processes, 180. 



form of the, 494. 

 Pro -embryo, 174, 198. 

 Prolifera rivularis, 4 1 . 

 Propagation, 80. 



Prosenchyma, 56. 

 Proteaceae, 73. 

 Protein, 23, 24, 37, 81, 85. 

 Protococcus, 128, 136, 145. 



cell, 103. 



viridis, 82. 

 Protoplasma, 568, 

 Pruina, 188, 498. 

 Prunus domestica, 95. 



Padus, 50, 257. 



spinosa, 234. 

 Pseudo-tubers, 293. 

 Ptelea trifoliata, 282. 

 Pteris aquilina, 192, 231. 



chinensis, 1 95. 



speciosa, 193. 

 Pubescens, 135. 

 Puccinia, 151. 

 Pulvinus, 551. 

 Pulp, 430. 

 Pulsatilla, 440. 

 Pyrus, 226, 319. 

 Pyxidium, 447. 



Quadrangular is, 129. 

 Quekett, E., 570. 



John, 577. 

 Quercus Robur, 241. 



Suber, 53, 69. 

 Quince, 10. 



Raceme, 300, 308. 

 Racemose, 134. 

 Rachis, 304. 

 Radical organs, 216. 

 Radix, 217. 



adventitia, 218. 



Ivarancusae, 17. 



tuberosa, 296. 



Rain, its influence on vegetation, 509. 

 Raja Pastinaca, 190. 

 Ranunculaceas, 329, 365. 396. 

 Ranunculus, 331. 



acris, 337. 



procerus, 320. 

 Rays of sun-light, 86. 

 Receptacle, 446. 

 Receptaculum, 148. 

 Red snow, 458. 

 Reniform, 130. 

 Reniformis, 132 

 Reproduction, 467. 



asexual, 531. 



irregular, 531. 



of a cell, 527. 



of plants, 524. 



organs of, 128, 557. 



regular, 531. 



sexual, 531. 



various modes of, 534. 

 Reseda, 433. 



alba, 387. 

 Resins, 30, 87. 

 Resorption, 516, 523. 



