INDEX 



279 



Larson, Floyd, 219 

 Larson, J. A., 40, 137, 254 

 Latex, 36, 37 

 Laurie, A., 129 

 "Law of level," 22 

 Leaf fall, 36, 50-51, 5S 

 mosaics, 125 

 movements, 50 

 tubercles, 114 

 Leaners, 93 

 Leather leaf, 175, 230 

 Leaves, 41 



as storage organs, 52-53 

 classification of, 44, 45 

 forms of, 51-52 

 structure of, 41 

 Legume family, 80, 89 

 Legumes, galls on, 112 

 pollination of, 80-82 

 root tubercles of, 113 

 Lemaireocereus thiirberi, 170, 252 

 Lenma, 24, 229 



pollination of, 71, 72 

 Length of day, effect of, 120-123 

 Lepidoptera, 78 

 Lettuce, wild, 43 

 Levitt, J., 137 

 Liana habit, 93-95 

 Lianas, 89-95 

 Liatris, 222 



Librocedrus decurrens, 244 

 Lichens, 114-116, 138, 144, 213, 214, 

 215 

 rhizoids of, 26 

 Life forms of Raunkiaer, 175-177 

 Light, 27, 38, 43, 119-128 



adaptation for securing, 125-126 

 effect on palisade development, 43, 44 

 intensity of, 119 

 measurement of, 127-128 

 protection from excessive, 126-127 

 quality of, 119 



requirement of, by plants, 123 

 Lillium, pollination of, 83 

 Limestone, 145 

 Linaria vulgaris, 105 

 Linden, 238 



Liriodendron hdipfera, 126, 239 

 Lithophytes, 100 

 Lithosere, 202 



Lithospennum canescens, 221 

 Loam, 146 

 Loehwing, W. F., 26 

 Long, Frances L., 88 

 Long-day plants, 120 

 Loomis, H., 166 

 Loosestrife, heterostyly in, 75 

 Lophocereus shotlii, 35, 252 

 Lousewort, 105 

 Lovejoy, P. S., 137 



Lovell.'John H., 68, 69, 70, 80, 81, 82, 

 83, 85, 88 



Ludkin, Edward J., 243 



Lui)ine, 184 



Lutz, Frank E., 88 



Lutz, Harold J., 254, 261 



Lycopus, 229 



Lynn, D. Anderson, 261 



Lynn, J. C, 261 



Lytlirinn salicaria, lieterostyly in, 75 



M 



McArdle, R. E., 117 



McBride, J. F., 231 



McCrea, R. H., 129 



McDole, G. R., 156 



McDougall, W. B., 26, 40, 64, 117, 137 



McLuckie, John, 117 



MacDougal, D. T., 117 



Magnesium, 148 



Mallow, 126 



Malva rotundifolia, 126 



Mangrove thicket, 173, 174 



Maple, 126, 184, 223, 224, 238 



mvcorrhizas of, 109 



roots of, 22 



stems of, 37, 38 

 Marbut, C. F., 157 

 Marsden-Jones, E. N., 88 

 Marsh, 168 



grass, 19 

 Martin, E. V., 143 

 Masui, Koki, 117 

 Mat-herbs, 178 

 Maximov, N. A., 172, 179 

 May apple, 233 

 Maybrook, A. C, 117 

 Mechanical tissue, 30 

 arrangement of, 31 

 factors influencing development of, 



32 

 in roots, 32 

 Medullary rays, 29 

 Megaphanerophytes, 176 

 Meier, F. C, 191 

 Melilotus alba, 224 

 Memory in insect pollination, 79 

 Menispennutn, 91 

 Mermaid weed, 186 



leaves of, 52 

 Mertensia virginica, 233 

 Mesophanerophytcs, 176 

 Mesophyll, 43 

 Mesophytes, 159, 175 

 Meso-xerophytcs, 159 

 Mesquite, leaf structure of, 43 

 Meyer, B. S., 137 

 Microphanerophytes, 176 

 Migration, 183-187, 207 



by gi'owth, 184 



through aid of animals, 186-187 

 of water, 185-186 



