400 



INDEX 



herbaceous stem, 116 ; trailing, 

 187 ; traveling, 188 ; typical leaf- 

 bearing, 115 ; various forms, 179 ; 

 woody, 119. 



Stevens, 119. 



Stigma, 273. 



Stimulus, 54 ; perception, 178. 



Stipule, 16 ; morphology, 80 ; special 

 forms, 82. 



Stock, 208. 



Stolon, 188, 189. 



Stoma, 19, 49, 262 ; clogging, 96 ; 

 diagram of number and area of 

 opening, 51 ; number, 50 ; position, 

 50. 



Storage, 266 ; battery, 167. 



Strasburger, Textbook, 40. 



Streaming of protoplasm, 37. 



Strophiole, 374. 



Structural features, 13. 



Strychnine, 109. 



Style, 273. 



Suberin, 98. 



Subsoil plowing, 260. 



Substitutions, 201. 



Sucker, 214. 



Sucrose, 100. 



Sugar, 100 ; cultivation, 101 ; kinds, 

 100; Maple, 181. 



Sun scalds, 368. 



Sundew, 246. 



Sunflower head, 143. 



Support of foliage, 265. 



Suspensor, 354. 



Symbiosis, 244. 



Systematic botanj^ 2. 



Tceniophyllum, 255. 



Tannin, 110. 



Tap root, 212, 214, 250. 



Taxonomy, 2. 



Telegraph Plant, 81, 83. 



Tendrils, 9, 76, 192 ; mode of oper- 

 ation, 79. 



Thallophytes, 12. 



Thallus, 190. 



Thein, 109. 



Theobromine, 109. 



Thigmotropism, 77. 



Thyrsus, 337. 



Tissue systems, diagram, 263. 



Tissues, definition, 8 ; healing, 122 ; 

 summary, 261. 



Topiary work, 207. 



Torsions, 201. 



Toxin, 173. 



Tracheae, 146. 



Tracheid, 31, 146. 



Traction, 149. 



Transfer, of water and food, 144. 



Translocation, of food, 151. 



Transmission of acquired characters, 



315. 

 Transpiration, 43, 262 ; amount, 43 ; 

 constants, 44 ; demonstration, 43, 

 44 ; effect of external conditions, 

 47 ; effects, 96 ; fluctuations, 45 ; 

 plant prepared for study, 45 ; 

 record, 47 ; reduction, 69 ; role, 

 49 : significance, 51. 

 Transpirograph, 45, 46. 

 Traumatropism, 249. 

 Tree, 9 : crotch, supported, 211 ; 

 height, 150 ; lawn, 181 ; surgerj', 

 211. 

 Tree Fern, 61. 

 Trichonies, 19, 70. 

 Tropical undergrow^th, 59. 

 Truth, test for, 13. 

 Tuber, 9, 192. 

 Tubercles, 245. 

 Tuberous roots, 251. 

 Tulip Tree, cross section, 121, 

 Tumbleweed, 359. 

 Tumhoa. 71. 

 Tumors, 200. 

 Twin fruit, 196, 199, 367. 

 Twiners, 185. 



Umbel, 337. 



Unit character, 309. 



Vallisneria, 284, 287. 



Valvate, 329. 



Variability, 39. 



Variation, 308; defined. 308, 314; 



selection, 318. 

 Vascular bundles, 116, 264. 

 Vegetables, 206 ; vs. fruits, 346. 

 Vegetative, bodies, specialized, 299 ; 



parts, potential, 300. 

 Veinlet, 31. 

 Veins, 29, 118; of loaf, 17: netted, 



17; parallel, 17; use, 144. 

 Venation, 65 ; netted, 65 : palmate, 



66 ; parallel, 66 ; pinnate, 66. 



