INDEX. 



499 



Plantain, 235, 248. 



Plasmolysis, 174. 



Plumed fruits and seeds, 258. 



Plumule, 15. 



Pod, 12. 



Pollen, 11. 



-sac, 11. 

 Pollination, 214. 

 Poly-adelphous, -androus, -peta- 



lous, -phyllous, -sepalous, 225. 

 Pome, 254. 

 Pond vegetation, 450. 

 Poplar, 246, 388. 

 Poppy, 326. 

 Potato, 359. 

 Potometer, 116. 

 Prickles, 186. 

 Primrose, 339. 

 Primulaceae, 344. 

 Protandry, 233. 

 Proteids, 39, 112. 

 Protogyny, 233. 

 Purple Loosestrife, 424. 



<Quillwort, 420. 



Raceme, 230. 

 Radicle, 15. 

 Ragged Robin, 321. 

 Ranunculaceae, 315. 

 Rays, 178. 

 Receptacle, 10. 

 Respiration, 31, 97-101. 



,, , heat formed by, 33. 



,, , intra-molecular, 32. 

 Rest-harrow, 187, 273. 

 Rhizomes, 183, 461, 469. 

 Root, 4. 



-cap, 5, 160. 



-climbers, 200. 



-hairs, 5, 123. 



-nodules, 5, 206. 



-pressure, 122. 



-structure, 169. 

 , -tubers, 188. 

 Rootlets, 4. 

 Rosaceae, 331. 

 Rose, 329. 

 Runners, 183. 



Sage, 353. 



Salt-marsh plants, 438. 

 Saltwort, 436. 

 Samara, 253. 

 Samphire, 336, 436. 

 Sand-dunes, 436. 

 -plants, 434. 

 Sedge, 437. 

 Sanicle, 335. 

 Saprophytes, 202. 

 Scarlet Runner, 44, 198. 

 Schizocarp, 255. 



Scots fir (Pine), 52, 347, 385, 470 

 Scrophulariaceae, 357. 

 Scurvy-grass, 435. 

 Sea Arrowgrass, 438. 



Beet, 436. 



Blite, 438. 



Campion, 435. 



Convolvulus, 436. 



Holly, 336, 436. 



Milkwort, 436. 



Plantains, 435. 



Poppy, 436. 



Purslane, 436. 



Spurge, 435. 

 Section-cutting, 67. 

 Seed-coat, 13. 

 ,, -lobes, 14. 

 Seedling, 14. 

 Seeds, 13. 

 Sepals, 10. 

 Shingle plants, 437. 

 Shoot, 6. 

 Silicula, 252. 

 Siliqua, 252. 

 Snowberry, 366. 

 Snowdrop, 292. 

 Soil, 111, 126. 

 Solanaceae, 363. 

 Spadix, 230. 

 Speedwell, 355. 

 Spike, 230. 

 Spines, 185. 

 Spirogyra, 65, 86, 87. 

 Spring flowers, 443-4. 

 Spurge, 232. 

 Stamens, 11, 222. 

 Standard-petal, 10. 

 Starch, 38, 96, 361. 



