274 



INDEX. 



Stem, structure of, 52-64. 



Stigma, 144, 146. 



Stigma, structure of, 156, 157. 



Stinging hair, 129, 209. 



Stipules, 90. 



Stomata, 109, 110, 113, 114. 



Stone-fruit, 191, 193. 



Transition from stamens to petals, 



152, 153. 

 Transpiration, 113-116. 

 Tree, 43. 

 Trillium, study of ilower of, 137, 



138. 

 Trimorphous flowers, 173. 



Storage of food in the stem, 72, 73. Tropseolum leaves, starch in, 121. 



Strawberry, 195. Truncate, 86. 



Struggle for existence, 197-205. Trunk, 41, 42. 



Sugar, formed during germination. Tuber, 47. 



10. 

 Sundew, 104^ 105. 

 Survival of the fittest, 211, 212. 

 Style, 146. 

 Sugar, 75, 76. 

 Suture, 184, 187. 

 Sweet pea, flowers and fruit, 177, 



178. 

 Symmetrical, 143, 144. 



Tulip, study of flower of, 139, 140. 



Twiners, 46. 



Two-ranked, leaves forming tw) 



rows up and down the stem, as in 



grasses. 

 Types of flowerless plants, 219- 



245. 

 Types, order of appearance of, 



217. 



Umbel, 132. 

 Umbellet, 135. 

 Underground stems, 46-48. 

 Unicellular plants, 219, 220. 



Tangential section, 56. 



Taper-pointed, 87. 



Taproot, 30. 



Tegmen, 6. 



Temperature, relation to germina^ Union of pistils, 147. 



tion, 7. Union of stamens, 147. 



Tendril, 46. Urns of mosses, 236. 



Tendril climbers, 46. Urn-shaped, widened at the bottom, 



Terminal flowers, 136. with a narrower mouth, like the 



Terminal bud, 81. corolla of the bearberry. Fig. 



Testa, 5. 148, V. 

 Thallophytes, 216. ' 



Thistle, Kussian, 201, 202, 205. Vacuole, 227. 



Three-ranked, leaves forming three Variety, 214. 



rows up and down the stem, as in Vegetable physiology, 2. 



sedges. Vein, 90. 



Tickle-grass, 201. Venation, 90, 91. 



Tissue, 58. Ventral suture, 184. 



Tomato, study of, 182. Venus' flytrap, 106. 



