INDEX 



351 



Pyrenomycetes, 219, 



229. 

 Pyrus, 145, 317, 323. 

 Quercus, 104, iii, 318. 

 Rabbits, 94, 222. [71. 

 Radicle (root of seed), 

 Ragwort, 24, 142, 331, 



335- [334- 



Railway flora, 171, 331, 

 Rain, 26, 27, 143, 145. 

 Ranunculus, 17, 64, 66, 



67, 88, 105, 122, 149, 



185, 190, 331. 335- 



Raphides (needle-like 

 crystals of calcium 

 oxalate), 106. 



Raspberry, 66, 305, 

 312, 323- 



Rats, 94, 127. [242. 



Red Algae, 180, 184, 



Reeds, 42, 185, 186, 

 196, 264, 323. 



Reid, 295. 



Renwick, 317. 



Resins, 97, loi, 141, 

 167, 289, 290, 293. 



Respiration, 84. 



Rhacomitrium, 250, 

 257, 262, 263. 



Rhizines (the absorb- 

 ing thread work of 

 lichens), 239. 



Rhizoids (the absorb- 

 ing hairs of mosses, 

 etc.), 257, 259. 



Rhizomes (under- 



ground root-like 



stems), 62, 63, 64, 

 66, 67, 69. 



Rhizomorphs (the 



strings due to mat- 

 ting together of fun- 

 gal threads), 226. 



Rhododendron, 94, 



.135. 154, 339- 



Richardia, 106, 149. 



Rimbach, 65. 



Rock flora, 191, 250. 



Roedeer, 94, 222. 



Root, 65, 66, 69, 125. 



Root pressure, 167. 



Rosaceae, Rose, 18, 

 28, 33, 35, 39, 62, 

 108, 146, 192, 305, 



314, 333, 335, 336. 

 Rotation of crops, 119. 

 Rowan, 39, 145, 165, 



305, 312, 315, 317. 



Rubber, 100. 

 Ruppia, 194, 195. 

 Rush, 172, 185, 264, 



331- [230- 



Rust and smut fungi. 



Rye, 174, 332. 



Saccharomyces, 213. 



Sagina, 251, 259. 



Sagopalm, 90, 165. 



Salix, 302, 315. 



Salt, 194, 195, 



Salter, 240. 



Sandflora, 120, 192. 



Saprophytes (living on 

 dead or decayed 

 matter), 220, 237. 



Sarcina, 198, 200, 207. 



Sargasso-weed, 175, 



179- [87, 133- 



Saxifraga, 29, 60, 61, 

 Scent, 16, 21, 33, 37, 



97, 105- 



Schimper, 255. 



Schizomycetes, 199. 



Schlich, 318, 



Schwarz, 117, 



Schwendener, 173, 174. 



Scirpus, 172, 196, 197. 



Scott, 185. 



Scudder, 19. 



Scurvygrass - associa- 

 tion, 193. 



Seagrass, 25, 193. 



Seaweed, Ch. IX. 



Seaside plants, 191. 



Secale, Rye, 173, 332. 



Sedges, 45, 172. 



Seed, seedcoat, seed- 

 ling (the ovule after 

 fertilization becomes 

 a seed), 37, 53, 71. 



Seed distribution, Ch. 

 II., III., 54, 55. 



Selaginella, 277. 



Senecio, 142, 314, 331, 



334, 335, 336. 

 Sensitiveness of plants, 



26, 120. 

 Sepals (outermost 



flower leaves), 9, 29, 



53- 

 Setaria, 44, 53. [206 

 Sewage - purification 

 Shale heap flora, 334. 

 Sheep, 94, 51, 323, 324 

 Shepherd's Purse, 54, 

 Shingle flora, 192. 

 Sieve tubes, 162. 



Silene, 18, 298. 

 Silverweed, 63, 137. 

 Sleep of leaves, 154. 

 Slime fungi, 225. 

 Sloane, 54. 

 Sloe, 108, 165, 314, 



315, 323- 

 Slug, 22, 222, 224. 

 Snake, 337, 338. 

 Snails, 22, 106. 

 Soil, 114, 115, 117, 128, 



202, 340. 

 Soil bacteria, 202. 

 Solanaceae, 39, 105, 



154. 

 Soredia (the grey dust 



on lichens), 242. 

 Sparmannia, 164, 167. 

 Spermatozoid, male 



spore, 255, 276. 

 Spergula, spurrey, 28, 



335, 336. 



Sphagnum, 253, 255, 

 264, 265. 



Spines, 97, 100. 



Spirogyra, 182, 190. 



Spores (reproductive 

 cells), 



Sprengel, 9. 



Spruce, 120, 168, 169. 



Squirrel, 222. 



Stachys, 105, 150, 307, 

 312. 



Stamens (male flower- 

 leaves), 10. 



Starch, 75, 76, 156, 



157. 

 Stem, 62, Ch. VIII. 

 Stevenson, 223. 

 Stigma (the end of the 



carpel which receives 



the pollen^, 10. 

 Stinging hairs, 97, no. 

 Stipa, 50, 51, 52. ■ 

 Stipules (expansions at 



baseof leaf), 142, 153. 

 Stomata (air-pores on 



leaf), 99, 140. 

 Stone flora, 181, 250, 



257- 

 Strasburger, 156. 

 Strawberry, 41, 62, 



63, 65. 

 Strength of wood, 173. 

 Style (narrow thin end 



of carpel), 10. 

 Suckers, 62, 63. 

 Sugar, 38, 39, 40. 



