INDEX 



411 



Taper-pointed, *131. 



Taproot, *41. 



Teleutospores, *262. 



Temperature and root-absorption, 

 55, 56. 



Temperature, relation to germina- 

 tion, 9. 



Tendril, *138. 



Tendril climbers, *74. 



Terminal bud, 63, 121, 122, *124, 

 126. 



Terminal flowers, 186, *191. 



Tertiary root, 36. 



Testa, 6. 



Tetraspores, *255. 



Thallophytes, 232, 235-275. 



Thallophytes, study of, 237-273*. 



Thallus, 235, 250. 



Thermostat, 9. 



Thistle, Russian, *379, 394. 



Thorns as branches, 68, *69. 



Thyme, stoma of, *153. 



Tickle-grass, *381. 



"Timber line," *329, *330. 



Tissue, 94, 95. 



Tomato, study of, 217. 



Tracheids, 92, 93, *94. 



Transition from stamens to petals, 

 *209. 



Transpiration, 156. 



Transpiration, amount of, 164, 165. 



Transpiration, measurement of, 

 159, *160, 161. 



Transportation by water, 380, 381. 



Trees, 69. 



Trees, age of, 71. 



Trillium, study of flower of, 192, 

 193. 



Trimorphous flowers, 367. 



Tropaeolum leaf , *132. 



Tropseoluni leaves, starch in, *170. 



Tropseolum, petiole, coiling of,* 75. 



Tropical vegetation, 324, 326. 



Tropophytes, 311, 318, 319. 



Truncate, *131. 



Trunk, *66, *67. 



Tuber, 76, *78. 



Tubercles on clover roots, *339. 



Tubular corolla, *203. 



Tulip, study of flower of, 194, 195. 



Tumble-weeds, 378, *379, *380. 



Turgescence, 184. 



Turnip, seedling, *32. 



Twayblade, beetle on flower of, 



*359. 



Twigs, study of, 62-64. 

 Twiners, 74, *75. 

 Twining, rate of, 74, 75. 

 Types, order of appearance of, 



298-305. 



Umbel, *187. 



Umbellet, 190. 



Underground stems, 75, *76, *77, 



*78, *79. 



Uneatable plants, 348. 

 Union of pistils, 202, 203. 

 Union of stamens, 201, 202. 

 Uredospores, 261, *262. 

 Usnia, *271. 



Vacuole, contractile, 180. 



Variety, 229, 230. 



Vaucheria, study of, 245, *246, 



247. 



Vegetable physiology, 1. 

 Vegetation, alpine, 328, *329, *330, 



*331. 



Vegetation, aquatic, 332, 333. 

 Vegetation, arctic, 327, *328. 

 Vegetation, regions of, 324. 

 Vegetation, temperate, 325, 326. 



