INDEX 
Fibro-vascular bundles, *65. 
Filament, #153. 
Filicales, 210 
Fittest, survival of, 205, 206. 
Fieshy fruits, 187. 
Fleshy fruits, uses of, 197, 108. 
Fleshy roots, 37-39. 
Floating seeds, 195. 
Floral diagrams, #156, *157. 
Floral envelopes, 149. 
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, 210-254*. 
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. 
Formative tissue, *71. 
Four-o’clock seed, 13. 
Foxglove, pinnate leaf of, *98. 
Free, 155, *156. 
Free central placentation, *155. 
Frond, *244, 245. 
Fruit, 181-199*. 
Fruit, definition of, 185. 
Fruit-dots, *244, 245. 
Fruits, study of, 181-184. 
Fruits, uses of, 191-199*. 
Fucus, 219-221*. 
275 
Funaria, *241. 
Fungi, 210, #2138, 214, 222-236*. 
Gametophyte, 248. 
Gamopetalous, *162. 
Gamosepalous, *152. 
Generations, alternation of, 237, 
248. 
Generative cells, in pollen tube, 
#165, 
Genus, 207, 208. 
Germination, 4-11*. 
Germination, chemical changes dur- 
ing, 9, 10. 
Germination, conditions of, 7-0. 
Gills, #229. 
Gourd-fruit, 188. 
Grafting, #75. 
Grain, 186. 
Grape sugar, 85. 
Gray, Asa, 55. 
Green layer of bark, 69. 
Groups, 209, 210. 
Growing point, 6, #36. 
Growth, secondary, 71, *72, *73, 
74. 
Guard-cells, #128, #129, 132. 
Gymnosperms, 211. 
Hematococeus, *218. 
Hairs, 182. 
Hairs, stinging, 124, 125, *126. 
Halberd-shaped, App., *264. 
Halophytes, 114, 118. 
Hard bast, *68, *69, *70, *73. 
Haustoria, 32, *33. 
Head, App., *267, #268. 
Heart-shaped, App., *264. 
Heartwood, 74, 77. 
Heliotropism, 111, 112. 
