208 



INDEX 



Scape, i6i. 



Scouring rush, 203. 



Scramblers, 129. 



Seed, 20, 163, 180; coat, 2t. 



SelagincUa, 204. 



Selection, natural, 8; artilicial, 8. 



Sepal, 133, i6q. 



Scpticidal capsule, 166. 



Sessile, 77. 



Shelf fungus, 194. 



Shrub, 19. 



Sieve tubes, 66. 



Silicic, 167. 



Silique, 167. 



Societies, 9. 



Soil, 40, 47. 



Sorcdia, 196. 



Sori, 177, 192. 



Spadix, 140. 



Spathc, 138, 140. 



Spermatophytes, 180. 



Spike, 157. 



Spirogyra, 184. 



Sporangium, 177, 186, 188, 201, 203, 204. 



Spore, 176, 178, 181, 184. 



Sporophyll, 180, 201. 



Sporophyte, 177. . 



Stamen, 135. 



Starch, 95, loi. 



Stem, 49; endogenous, 59; exogenous, 



61 ; kinds of, 49. 

 Stigma, 135, 144, 145- 

 Stipule, 76, 84. 

 Stock, 125. 

 Stomate, 87. 

 Stone fruit, 168. 

 Storage of food, 99. 

 Struggle to live, 4, 6. 

 Style, 13s, 163. 

 Summer-spore, 191. 

 Sun energy, 05. 



Survival of fittest, 7. 

 Swarm-spores, 186. 

 Symbiosis, 196. 

 Syngenesious, 141. 



Tcleutospores, 192. 

 Tendril, lor. 

 Thalloiihyte, i8r, 184. 

 Thallus, T84, 197. 

 Thorns, loi. 

 Thyrse, 160. 

 Tillandsia, 1 10. 

 Timber, decay of, 195. 

 Tissue, 60, 62. 

 Toadstool, 194. 

 Torus, 134, 169. 

 Trachcid, 65. 

 Transpiration, 98, 1C3. 

 Twiners, 129, 131. 



Umbel, 159. 

 Undergrowth, 12. 



Valve, 164. 

 Variation, 2. 

 Vaucheria, 186. 

 Verticellate, 84. 



Water-pore, 88. 



Wheat rust, 192. 



Whiteweed or ox-eye daisy, 155. 



Whorled, 84. 



Willow mildew, 190. 



Wind travelers, 173. 



Woody fibre, 17. 



Wounds of plants, 56. 



Yeast plants, 190. 



Zygnema, 185. 

 Zygospore, 185, 189. 



