346 



INDEX 



Soapania, 116. 

 Schizomycetes, 31. 

 Sohizophytes, 21. 

 Sclerenchyma, ..'SI, 2S2, 284, JSS, 



S8S, 290, ffJl. 

 Scouring rush, 159. 

 Scrophulariacese, 375. 

 Scutellaria, 375. 

 Sedge family : see Cyperacea?. 

 .Seed, 183, IS4, 210, Sll, 212, 214. 

 Selaginella, 162, IG4. li:r,, li:i:, 168. 

 Sensitive fern : see Onoelea. 

 Sensitive-plant : see Acacia. 

 Sepal, SfM, 231. 

 Sequoia, 1S9. 

 Seta, 98, IJr,. 

 Sex, 12. 



Sexual spore, 10. 

 Shepherd's purse : see Capsella. 

 Shield fern : see Aspidium. 

 Shoot, 312. 



Sieve vessels, S85, 286. 

 Silphium, 279. 

 Siphon forms, 27. 

 Siphonogams, 183. 

 Siphonogaray, 183. 

 Slime moulds, 74, 75. 

 Smut, 62. 



Siiajidragon : see Antirrhinum. 

 Soil, 314. 

 Solanaceas, 275. 

 Solanum, lUS, 375. 

 Solidago, 279. 

 Solomon's seal, 2.33. 

 Sorus, i.?C, 143, lU- 

 Spadix, 244, ^45. 

 Spathe, 244. 245. 

 Sperm, 16, 100, 7,7,?, 135, 162, 166, 



169, 1S7, 190. 

 Spermatia, 43, 44. 

 Spermatophytes, 2, 171, 172. 

 Spermatozoid, 16. 



Sperm mother cell, 100. 



Sphagnum, 105, 106, 122, 123. 



Spike, 240. 



Spirsa, 262. 



Spiral, 193. 



Spirillum, 76. 



Spirogyra, 28, 29, 30. 



Spongy tissue, I4S. 



Sporangium, 10, 136, 143, 145, ino, 



157, 163, 179. 

 Spore, 9. 

 Sporidium, 65. 

 Sporogenous tissue, 103. 

 Sporogonium, 98, 102, IO4, 105, 106, 



125, 120. 

 Sporophore, .^9, 50. 

 Sporophyll, 145, I47, I4S, 149, 174, 



176. 

 Sporophyte, 97, 102, 1S7. 

 Spruce : see Pieea. 

 Stability of form, 298. 

 Stamen, 174, 170, 196, 198, 219, 



220. 

 Stele, 191, 283, 285. 

 Stem, 139, 283, 389, 3!)1, 312. 

 Stemonitis, 75. 

 Stereome, 282. 299. 

 Sterile tissue, 103. 

 Sticta, 80. 

 Stigma, 199, 202. 

 Stomata, I4I, 142, 191, 295, 301. 

 Strawberry: see Fragaria. 

 Strobilus, 160. 161, 163, 165, 174, 



175, 176, 193, I'.L'i. 

 Style, 19U, 202. 

 Substratum, 49. 

 Sumach, 235. 



Sunflower : see Helianthus. 

 Suspensor, 167. 168, 183, 200, 



210. 

 Symbiont, 79, SO. 

 Symbiosis, 79, H6. 



