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, 



*125. 

 Terminal flowers, 186, *191. 

 Tertiary root, 36. 

 Testa, 6. 



Tetraspores, *255. 

 ThaUophytes, 282, 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 Une," *329, «330. 

 Tissue, 94, 95. 

 Tomato, study of, 217. 

 Tracheids, 92, 93, *94. 

 Transition from stamens to petals, 



*209. 

 Transpiration, 166. 

 Transpiration, amount of, 164, 165. 

 Transpiration, measurement of, 



169, *160, 161. 

 Transportation by water, 380, 381. 

 Trees, 69. 

 Trees, age of, 71. 

 Trillium, study of flower of, 192, 



193. 

 Trimorphous flowers, 367. 

 TropsBolumleaf, *132. 

 TropsBOlum leaves, starch in, *170. 



Tropseolum, petiole, coiling of,* 75. 



Tropical vegetation, 324, 325. 



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, *82. 



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. 



