IXDEX 



371 



Excretion of water, 134, 135. 

 Excurrent trunk, 52. 

 Existence, struggle for, 200-206. 

 Exogenous, 71. 

 Explosive fruits, 191, 192. 



Fall of horsensliestnut leaf, *102, 



104. 

 Tall of the leaf, 141, 142. 

 Family, 208. 



Family, subdivisions of, 209. 

 Fascicled roots, *34. 

 Fermentation, 245, 246. 

 Fern-plants, 280-294*. 

 Ferns, 280-287*. 

 Fertilization, 165-167*. 

 Fertilizers, vegetable, 337-339. 

 Fibers, 340, 341. 

 Fibrous roots, *34. 

 Fibro-vascular bundles, *65. 

 Filament, *1.53. 

 Fittest, survival of, 205, 206. 

 Fleshy fruits, 187. 

 Fleshy fruits, uses of, 197, 198. 

 Fleshy roots, 37-39. 

 Floating seeds, 195. 

 Floral diagrams, *156, *157. 

 Floral envelopes, *148. 

 Floral organs, movements of, 175- 



177*. 

 Flower, nature of, *159, *160. 

 Flower, organs of, *148, 149. 

 Flower, plan of, 148-157*. 

 Flower-buds, position of, *90, *91. 

 Flowerless plants. See Spore-plaids. 

 Flowers, bird-pollinated, 174. 

 Flowers, colors of, 171, 172. 

 Flowers, ecology of, 168-180*. 

 Flowers, odors of, 170, 171. 

 Flytrap, Venus, *121, 122. 



Follicle, *186. 



Food in embryo, 12. 



Food, storage of, in root, 37, 38. 



Food, storage of, in stem, 82-85. 



Food, storage outside of embryo, 12. 



Foods for animals, 336, 337. 



Foods, human, 324-335. 



Forestry, 348-353. 



Forests, influence on climate and 



water supply, 352, 353. 

 Formative tissue, *71. 

 Fossil plants, 236, 237, 293, 294, 



298. 

 Four-o'clock seed, 13. 

 Foxglove, pinnate leaf of, *98. 

 Free, 155, *156. 



Free central placentation, *155. 

 Frond, *281. 

 Fruit, 181-199*. 

 Fruit, definition of, 185. 

 Fruits, study of, 181-184. 

 Fruits, uses of, 191-199*. 

 Fuous, type study, 230-233*. 

 Fuel, 348. 

 Funaria, *276. 

 Fungi, 239-264*. 

 Fusarium, 323. 



Gamete, *221, 225, 228, 229, *232, 

 *248, *268, *269, *276, *285. 



Gametophyte, 271, 275, 277, *283, 

 286, 291, 293. 



Gamopetalous, *152. 



Gamosepalous, *152. 



Generations, alternation of, 270. 



Generative cell, in pollen tube, *165. 



Genus, 207, 208. 



Germination, 4-11*. 



Germination, chemical changes dur- 

 ing, 9, 10. 



