INDEX 



363 



Horse-chestnut buds, 102*, 103* 

 Horticulture, 315-319 

 Host, 49 



Hybrid blackberries, 190 

 Hybrid plums, 187* 

 Hybridizing, *186-190 

 Hybrids, *186-190 

 Hydrogen, 38, 343, 344 

 Hydrophyllum, 125* 

 Hydrophytes. See Water plants 

 Hypha, 236 

 Hypocotyl, 158*, 159* 

 Hypogynous, 132 



Iceland moss, 251 



Independent plants, 48 



Indian corn, germination of, 18*, 



160* 



Indian corn, kernel of, 17*, 183* 

 Indian corn, structure of stem of, 



11*, 68* 



Indian pipe, 50*, 51* 

 Indian-corn breeding, *181-186 

 Indian-corn culture, 182, 322 

 Indusium, 272*, 273, 276* 

 Industries, plant, *308-332. See also 



Agriculture, Horticulture, Fuel, 



Fibers, Timber 

 Inferior ovary, 131*, 132* 

 Insectivorous plants. See Carnivo- 

 rous plants 



Insect- pollination, 139 

 Insects, diseases due to, 328, 330 

 Insects, pollen-carrying apparatus 



of, 146* 



Integuments, 300, 301*, 303* 

 Intercellular spaces, 36* 

 Iodine, from algse, 231 

 Iodine test for starch, 40 

 Irish moss, 233 

 Irrigation, 322, 323 

 Irritability, 22 

 Irritability in plants, nature and 



occurrence of, 22 

 Ivy, relations of, to light, 59* 



Jordan, E. O., 201 

 Juniper, 294 

 Jute, 313 



Kelps, 231 * 



Knees of cypress, 26* 



Knotgrass, pollination of, 142* 



Knots, 67*, 68 



Kdlreuter, 138 



Laminaria, 231 



Lateral buds, 95* 



Layering, 90 



Leaf, 34-36, *69-84 



Leaf, fall of, 77-79 



Leaf arrangement, *71-76 



Leaf buds, 95*, 101* 



Leaf mosaics, 74 



Leaf movements, 77* 



Leaf scars, 95*, 102*, 103*, 105* 



Leaf section, 36* 



Leaves, compound, 13 



Leaves, functions of, 38 



Leaves, simple, 13 



Leaves, structure of, 13, *34-36 



Leaves, submerged, 79* 



Leguminous plants, 205*, 207* 



Lenticels, 103, 105*, 106 



Leucoplasts, 41 



Lianas. See Climbing plants 



Lichens, *247-251 



Lichens, nature of, 249 



Lichens and soil formation, 250 



Lichens, uses of, 250, 251 



Light, exposure to, 58-60* 



Light, movements caused by, 76 



Lilac mildew, 244* 



Litmus, 251 



Live-forever, 126* 



Liverworts, 262, 268, 269*, 281 



Lizard's-tail, 127* 



Locules, 129*, 131* 



Long-leaf pine, 294, 297* 



Lycoperdon, 259*, 261 



Lycopodineae, 281 



Lycopodium, 279* 



Macrocystis, 231 



Maidenhair fern, 270* 



Male cells of pollen tube, 135*, 291* 



Male nuclei of pollen tube, 135*, 291* 



Mallows, pollination in, 140* 



Maple sugar, 309, 311 



Marchantia, 269* 



Marl, 229 



Matrimony vine, pollination in, 140* 



May apple, 86* 



Mendel's law, 187, 188 



Mesophytes, 82 



Mesquite, root system of, 29 



Microsphsera, 261 



Micropyle, 136*, 300, 301* 



Microspore, 290 



Microsporophyll, 290 



Migula, W., 199 



