Index 



543 



Spectrophore, 317. 

 Spencerites, 146. 

 Sphaerotheca, 231. 

 Sphagnum, 233. 

 Sphenophyllum, 135, 143. 

 Sphenopteris, 147. 

 Spongioles, 249. 

 Sporangiophore, 68, 88. 

 Sporogenous tissue, sterilization of, 



56, 69. 

 Sporophylls, nature of, 86. 



strobiloid origin of, 86. 

 Sporophyte, intercalation of, 55, 56. 



62. 

 Stamen, homologies of, 92. 



irritability of, 480, 500. 



Starch - forming corpuscles, 381, 



384- 



Starch-grain, crystalline structure of, 

 388. 



lamination of, 385. 

 Statoliths, 474, 475. 

 Stele theory, 208. 



Stem, junction with root, 218. 

 Stimuli, transmission of, 495. 

 Stomata, 259. 

 Stratification, 184. 

 Striation, 184. 

 Sulphur bacteria, 370. 

 Symbiosis, 341, 343, 349, 435. 

 Synergidae, 101. 



Tannase, 409. 

 Tendrils, 476. 

 Tensions, 444. 

 Thallome, 67. 

 Thermotonus, 457. 

 Thermotropism, 486. 

 Thickening ring of Sanio. 194. 



Thickening, abnormal secondary, 



215, 221. 

 Thinnfeldia, 146. 

 Thyloses, 187. 

 Tissue, transfusion, 224. 

 systems of, 219. 



- classification of, 204. 

 Tmesipteris, 239. 

 Tonoplasts, 174. 

 Tonotaxis, 487. 

 Tracheids, 220. 

 Translocation, 373, 376. 

 Transpiration, 258. 



- path of current, 269. 



functions of, 268. 

 Traumotropism, 487. 

 Trehalase, 408. 

 Trichomanes, 237. 

 Trichome, 67. 

 Trypsin, 409. 



Ulodendron, 145. 

 Utricularia, 79, 440. 



Vertebraria, 140. 

 Vitellins, 394, 396. 

 Volkmannia, 143. 



Water, resistance of to tensile stress, 



275. 



culture, 361. 

 IVilliamsonia, 150. 



Xanthophyll, 293, 298. 

 Xenia, 104. 



Zein, 396. 



Zygopteris, 136, 149. 

 Zymase, 429. 



