INDEX 



539 



Irritability of tendrils, 62 

 Ivy, aerial roots of, 63* 

 Ivy, relations of, to light, 63* 



Jimson weed, 365* 



Jordan, E. 0., 162, 164, 165, 173 



Juniper, 311*, 313 



Kelps, 208* 

 Kerner, Anton, 71 

 Knees, of cypress, 29* 

 Knots, 53* 



Laminaria, 208* 



Land plants, 480 



Lateral buds, 92* 



Leaf, *13-20, *55-69, 89 



Leaf, fall of, 19, 66, 68 



Leaf, member of plant body, 39 



Leaf arrangement, 55*, 56* 



Leaf blade, 10*, 13 



Leaf buds, 91 



Leaf mosaics, 59*, 60 



Leaf movements, 57, *63-66 



Leaf scars, 92*, 100*, 101* 



Leaf sections, 14* 



Leaf tendril, 62 



Leafstalk, 10*, 13 



Leafy liverworts, 271*, 272 



Leaves, compound, 13 



Leaves, functions of, 15-20, *76-79, 



89 



Leaves, simple, 13 

 Leaves, structure of, 14* 

 Leaves, submerged, 481* 

 Legume, 353, 354* 

 Leguminous plants, 36, 37, *374-377 

 Lemon, 462 

 Lenticels, 102*, 103* 

 Leucoplasts, 79 

 Lianas. See Climbing plants 

 Lichens, 226, *235-239 

 Lichens, nature of, 235-239 

 Lichens, uses of, 237-239 

 Lichens and soil formation, 235, 236, 



238 



Liebig, Justus von, 26 

 Light, exposure to, 55*, 57*, 59* 

 Light, movements caused by, 63* 

 Light requirements, 489-494 

 Lilac mildew, 229*, 230* 

 Lily family, 345*, 346 

 Lime, 37 

 Limnophila, 480* 

 Linden, fruit cluster of, 161* 



Litmus, 239 



Liverworts, 158, 257, *266-272 



Locules, 112* 



Locust, black, 65, 501, 502 



Lycoperdon, 253* 



Lycopodineae, 293 



Lycopodium, *293-295 



Macrocystis, 208 



Madder family, 367*, 368* 



Magnesium, 448 



Male cells of pollen tube, 116*, 326 



Male nuclei of pollen tube, 116* 



Mallows, pollination in, 121*, 131* 



Malting, 145 



Mangrove, 497* 



Maple fruit, 150* 



Maple sugar, 82 



Marchantia, *266-271 



Marl, 205 



Marsilia, 290*, 291 



May apple, 72* 



Mechanics of stem and root, 48, 49*, 



50 



Medullary ray, 50*, 81 

 Megasporangium, 295, 306 

 Megaspore, 295, 306, 325 

 Mendel's law, 426 

 Mesocarpus, 204* 

 Mesophytes, 480, 487, 488 

 Mesquite, root system of, 27 

 Messmates, 35 

 Micropyle, 21*, 117*, 324 

 Microsphsera, 229*, 230* 

 Microsporangium, 295, 306 

 Microspore, 295, 306, 325 

 Microsporophyll, 295, 307* 

 Migula, W., 162 

 Mildews, *219-222 

 Milk supply, 169, 175, 177 

 Mineral constituents of plants, 15, 



448 



Mint family, 364 

 Mississippi River, delta of, 28 

 Mississippi River, silt carried by, 28 

 Mistletoe, 36, 384* 

 Mixed buds, 91, 94* 

 Molds, 166, 178, *214-219, 231 

 Monadelphous, 111 

 Monocotyledonous stems, *53-55 

 Monocotyledonous stems, growth of, 



in thickness, 54, 55 

 Monocotyledons, 12, 327, 335 

 Monocotyledons, families of, *335- 



360 



