INDEX. 



188, 



Moors, 187, 188. 



Mosaic arrangement, 25, .7. 8j 



Mosses, 87, 107, 110, 113, 118, 



194, 209, 214. 

 Motile leaves, 9, 10, 11, 49, 198, 



199. 

 Mould, 109. 

 Mullein, 43, 44. 

 Mushrooms. 157. 



N 



Nectar, 123, 158. 

 Nelumbium, 180. 

 Nicotiana, SO. 

 Nightshade, 26. 

 Nitrogen, 153. 

 Nodes, 54. 

 Nuphar, 92. 

 Nutrition, 3, 149. 

 Nymphaea, 17 S, ISO. 



Oak, 69, 101. 



Oak forest, 145, 248. 



(Edogoniuni, 111. 



Orchids, 98, 99, 126, 127, 132, 133, 



l.i',. 135, 136, 189. 

 Organs, 3. 

 Ornithogalum, SI. 

 Ovary, 79, so, 125. 

 Ovules, 78, 79, SO. 

 Oxalis, 10, 50. 199. 

 Oxygen, 29, 138,153. 



Palisade tissue, :!!). 

 Palms, 86, 87, 230. 

 Pandanus, 103. 



;/. 205. 



Parasites, 106, 150. 



Passion vine, 62. 



Pastures, 241, 242. 



Pellionia, 24. 



Pentsteinon, 137. 



Peony, 7S. 



Petals, 7S, 79, 80. 



Petioles, 15, 26, 35, 55. 



Phlox, 80. 



Photosynthesis, 28, 29, 150, 152, 



153, 156. 

 Physiology, 149. 

 Pickerel weed, 181, 182. 

 Pines, 63, 65, 66, 112, 115, 117, 190, 



227, 229, 230. 

 Pirus, 79. 

 Pistil, 77, 79, SO. 

 Pitcher plant, 155, 156, 157, 158. 

 Pith, 83, 84, 107. 

 Plains, 213, 215, 216. 

 Plankton, 174. 

 Plant body, 2. 

 Plant societies, 1, 146, 162, 168, 



174. 

 Plastid, 152. 

 Platyceriuni, 100. 

 Plumes, 112, 113. 114, 116, 117. 

 Plumule, 51, 140. 

 Pollen, 77, 111, 112, 115, 



123. 

 Pollination, 77, 115, 122, 123. 

 Polygonatum, 35. 

 Ponds. 142, 175. 778, ISO, I84. 

 Pondweed, 176, 181. IS.'. 

 Potato. 74. 76. 

 Potentilla, .;./. 79. 

 Prairies, 208, 222, 237. 240. 

 Prickles, 146. 



Prickly lettuce. 12. 197, 198. 

 Primrose, 137. 

 Procumbent stem. 57. 

 Profile position, 197, 198. 

 Pronuba, 130, 131. 



121, 



