INDEX 



49 i 



Seed, of pepper, 185. 

 Seed plants, 207, 357-391- 

 Seedlings, 1-12; respiration of, 108- 



ui. 



Seeds, dispersal, 198-205. 

 Seeds, food in, 11-19. 

 Seeds, germination of, 1-12. 

 Seeds, grapplers on, 202-204. 

 Seeds, synopsis of parts, 386. 

 Selagiriella, 347~349> 35 2 - 

 Selaginella rupestris, 350. 

 Selection, in plant breeding,' 469 



472. 



Sensitive fern, 329, 339. 

 Sensitive plants, 80, 410. 

 Sepal, 142. 



Sequoia sempervirens, 445. 

 Sequoia washingtoniana, 442, 445. 

 Sexual reproduction, 216, 217, 224, 



225, 237, 239, 251, 255, 258, 264, 



379, 380. 

 Shaddock, 412. 

 Sheath of corn leaf, 51, 71. 

 Shoots, characters of, 63. 

 Shoots, winter condition of, 61-69. 

 Sigillaria, 354, 355. 

 Silicon, 117. 

 Silique, 192. 



Silphium laciniatum, 78. 

 Simple leaves, 73. 

 Siphon algae, 226-228. 

 Siphonales, 230. 

 Siphoneae, 209, 226. 

 Sisal, sisal hemp, 405. 

 Smilax, 46. 

 Smut fungi, 276-279. 

 Smut spores, germination, 277, 285. 

 Solanaceae, 416. 

 Solanum tuberosum, 416. 

 Solidago, 419. 

 Soredia, 271. 

 Sorghum, 398, 399. 

 Sour wood tree, 415. 

 Spadix, 163, 164. 

 Spanish needles, 203. 

 Spartium, pollination of, 178. 

 Spathe, 164. 

 Sperm case, 222-228, 230, 237, 238, 



240, 242, 258, 304, 308, 317, 335, 



361, 379- 



Sperm case of pine, 361, 365. 

 Sperm cases of Zamia, 370. 

 Sperm cells, 182-184. 

 Spermatophyta, 207, 210, 375. 



Spermatophytes, 375. 



Spermogonia of barberry rust, 281, 



282. 

 Sperms, 222, 224, 227, 230, 238, 325, 



335, 336, 365- 

 Sperms of Zamia, 369, 370. 

 Sphseriales, 265. 

 Sphagnales, 322. 

 Sphagnum, 323. 

 Sphagnum moors, 322. 

 Spikelets, 158, 162. 

 Spirillum, 135, 245. 

 Spirogyra, 98^212-219. | 

 Sporangiophore, 249^ 

 Sporangium, 249, 253. 

 Sporangium fruit fungi, 248-260. 

 Sporangium of ferns, 330. 

 Sporangium series of fungi, 247, 300. 

 Spore case, 242, 249, 253, 255, 330, 



348. 



Spore case fungi, 247, 300. 

 Spore case of angiosperms, 379. 

 Spore case of ferns, 330, 331. 

 Spore of horsetail, 345. 

 Spore plant, 324, 328. 

 Spores, asexual, 247; germination, 



25 1 - 



Spores of ferns, 331, 334. 

 Spores of liverworts, 310, 311. 

 Spores of mosses, 320, 321. 

 Sporidia, 276, 277, 284. 

 Sporocarp, 226. 

 Sporofinia grandis, 253. 

 Sporogonium, 309, 310, 313, 315, 



3 J 9- 



Sporophores, 247, 249, 256, 257. 

 Sporophyll of fern, 339. 

 Sporophyll of horsetail, 345. 

 Sporophyll of pine, 360. 

 Sporophyll of Selaginella, 347, 348. 

 Sporophyte, 219, 224, 324, 325, 328, 



375- 



Spurge family, 4. 

 Squash, 195, 196, 419. 

 Squash seed, 7, n. 

 Stamens, 143, 145, 150, 151, 154, 



159, 166. 

 Stamens, dimorphic, 150; diadel- 



phous, 151; syngenesious, 154, 



176. 



Stamens of pine, 360, 361. 

 Staminate cone of pine, 360, 361. 

 Starch, 15-17, 97-107; testfor, 15-17. 

 Starch grains, 14-17, 213, 214. 



