362 
Evolution of plants, 304-306 
Existence, struggle for, 167-170 
Family, 196 
Fermentation, 246, 247 
Ferments, 135, 165, 166 
Fern gametophyte, 274*, 275 
Fern leaflets, 276* 
Ferns, *269-281 
Fertilization, 16, 136%, 137, 290, 291* 
Fertilization in angiosperms, *301-303 
Fiber plants, 312-314 
Fibrovascular bundles, 11*, 13, 62*, 
63, 67, 275, 276 
Filament, 128*, 129 
Filicineze, 281 
Fireweed, flowers of, 153* 
Fissidens, 263* 
Fission plants, 260 
Fleshy leaves, 80* 
Fleshy roots, 29* 
Flora, 137 
Floral diagrams, 133* 
Floral organs, 14*, 15*, 125-133, 298- 
802 
Flower, *14-16, *125-155 
Flower buds, 95*, 99%, 101* 
Flowering plants, 299 
Flowers, ecology of, *137-154 
Food, raw materials for, 7, 37, 38 
Food, storage of, 17*, 43-46 
Food, storage of, in stem, 43,44 [43 
Food, transportation of, in plant, 42, 
Food cycle, 7*, 38-48 
Food manufacture, 7, 18, *34-40 
Forest plantations, 114, 115*, 117* 
Forestry, *111-124 
Forests, pure and mixed, 112 
Forests, regulators of water supply, 
118-120 
Fossil plants, 280, 294-296 
Fruit, 303, 804 
Fruit bud, 99* 
Fruit sears, 104 
Fruit spurs, 98, 99*, 100 
Fruits, edible, *315-319 
Fucus, 230, 231*, 260 
Fuel value of wood, 108 
Fungi, *234-261 
Fungi, classification of, 261 
Gamete, 225, 228 
Gametophyte, 266, 274%* 
Gardening, 319 
Generations, alternation of, 266 
INTRODUCTION TO BOTANY 
Generative cells in pollen tube, 135*, 
291% 
Generative nucleus, 135* 
Genus, 194 
Geranium leaf, section of, 36* 
Geranium (Pelargonium) shoot, 69% 
Germ diseases, 210-218 : 
Germination, 17, 18*, *159-166 
Gills, 258 
Grafting, 91, 92*, 93, 316*, 317 
Grain, 17*, 156. See also Cereals, 
Corn, Wheat 
Grape mildew, *238-242 
Grapes, 330, 831 
Grasses, 175*, 814-315 
Gray, Asa, 196 
Green alge, *221-230 
Green felt. See Vaucheria 
Green slime, 222* 
Groundsel, 28* 
Groups of plants, 196 
Growing point, 67, 101 
Growth of stem, 60, 61, 66, 67 
Guard cells, 85*, 36* 
Gymnosperm, life history of, #282- 
292 
Gymnosperm cones, 288%, 293* 
Gymnosperms, *282-296 
Gymnosperms, classification of, 306 
Gymnosperms of past ages, 294, 296 
Gymnosporangium, 254 
Gypsy moth, destruction caused by, 
123* 
Hairs, root, 9, 10*, 11*, 42* 
Half-inferior ovary, 182 
Hard bast, 64* 
Hard woods, 109, 110* 
Hard-wood trees, 109, 110, 112%, 
113* 
Haustoria, 31*, 239 
Hawk moth, 146* 
Hays, W. M., 180 
Heartwood, 66 
Helotism, 330 
Hemlock, 293*, 294 
Hemp, 313 
Hepaticae, 281 
Heredity. See Coming true from the 
seed 
Heterocyst, 220 
Hickory, buds of, 95* 
Holdfast, 230, 283 
Honeybee, 146* 
Hopkins, C. G., 179, 183 
