280 



INDEX 



Migration through aid of wind, 184-185 



Milkweeds, 185, 223 



Miller, Edwin C, 137 



Milstead, E. H., 219 



Mimosa, leaf movements of, 50 



Mistletoe, 104, 184 



Moles, 150 



Monarda punctata, 222 



Monoclinous, 67, 73 



Moncecious, 67 



Moonseed, 91 



family, 89 

 Moore, Harrington, 157 

 Moore, George T., 157 

 Moores, C. A., 219 

 Morman tea, 249 

 Moth flowers, 84 

 Moths, 78, 84 



Movgeotia, chloroplasta of, 44, 127 

 Mountain laurel, 152 



mahogany, 245 

 Mulberry, variations in leaves of, 51 

 Mullein, hairs of, 49 

 Mushrooms, 59 

 Mycopremna, 110 

 Mycorrhizas, ectotrophic, 105-109 



ectendotrophic, 108 



endotrophic, 108, 109-110 

 Myosotis laxa, 236 

 Myricacese, 113 



N 



Nanophanerophytes, 176 



Nearow, W. W., 176 



Neethling, E. J., 137 



Nepenthes, 64 



Newcombe, F. C, 88 



Nichol, A. A., 254 



Nichols, George G., 202, 254 



Nocotiana noctiflora, pollination of, 84 



Nightingale, G. T., 26, 137 



Nikiforoff, C. C., 157 



Nitrogen, 148, 149 



Normal spectrum, 177 



Norman, A. G., 157 



Nostoc, 114 



Nijmphea, 229, 236 



Oak, 100, 125, 216, 223, 239, 240, 245 



galls on. 111, 112 



live, 33 



mycorrhizas of, 105 



pollination of, 67, 68 



roots of, 22 

 Oak-chestnut-yellow poplar forest, 239 

 Oak-hickory forest, 239 

 Ocotillo, 161, 252 

 Odor in insect pollination, 79 



CEnothera biennis, 123, 224 



pollination of, 84 

 Old witch grass, 185 

 Olive, 33 



Olsen, Carsten, 157 

 Opuntia, 36, 223, 249, 252 

 Orchidacese, 96 

 Orchids, mycorrhizas of, 109, 110 



roots of, 25 

 Organ pipe cactus, 252 

 Orobanchacese, 103 

 Orobanche, 103 

 Osmorhiza, 187 

 Oxygen, 20, 45, 46, 148 



in soil, 20, 139 



in water, 139 



Palisade cells, 41, 42 

 causes of, 43 

 significance of, 44 

 Palmetto, 94-99 

 Palo verde, 252 

 Panicum capillary, 185 



virgatum, 226 

 Parasites, 30, 101-105 



partial, 101 

 Parenchyma, 29 

 Parkinsonia, 252 

 Paulson, Robert, 117 

 Pavetta, 114 

 Peaches, 143 

 Pearsall, W. H., 231 

 Pearson, G. A., 129 

 Pedicularis, 105 

 Pellet, Frank C., 88 

 Pember, F. R., 156, 261 

 Penfound, W. T., 40 

 Pennyroyal, 154 

 Penstemon, 251 

 Perennials, 21, 178 

 Pessin, Louis J., 99, 100, 254 

 Petalostemon, 234 

 Petiolules, 93 

 Phanerophytes, 176 

 Phaseolus, 91 

 Phenology, 232-237, 271 

 Philhps, E. P., 191 

 Phillips, J., 261 

 Phloem, 31 

 Phlox, flowers of, 83 



pollination of, 84 

 Phoma, 110 

 Phoradendron, 104 

 Phosphorus, 147 

 Photometer, 128 

 Photosynthesis, 45 

 Phragmites, 168 

 Phycomycetes, 110 

 Physiognomy, 194 

 Phytogeography, 238 



