344 



INDEX 



Palisade tissue, 142, 295. 



Palmaceas, 241. 



Palm family : see Palmaceaa. 



Palms, 241, 242, 243. 



Papaveraceae, 261. 



Pappus, 276, 277, 278. 



Parasites, 48, 85. 



Parenchyma, 280, 281, 282, 288. 



Parmelia, 79. 



Parsley: see Petroselinum. 



Parsley family : see Umbelliferae. 



Parsnip : see Pastinaca. 



Parthenogenesis, 52. 



Pastinaca, 267. 



Pathology, 297. 



Pea : see Pisum. 



Peach : see Prunus. 



Peach curl, 60. 



Pea family : see Leguminosae. 



Pear: see Pirus. 



Peat, 119. 



Pellaea, 146. 



Penicillium, 60. 



Pentacycla?, 268. 



Pentstemon, 275. 



Peony, 220. 



Pepper, 211, 258. 



Pepper family : see Piperaceae. 



Perianth, 219, 220, 221. 



Periblem, 283. 



Perigyny, 225, 226. 



Peristome, 126, 127. 



Peronospora, 55, 56. 



Petal, 220, 221. 



Petiole, 141. 



Petroselinum, 267. 



Phaeophyceac, 6, 32. 



Phanerogams, 172. 



Phaseolus, 216, 265. 



Phloem, 285, 287, 288, 290, 292, 294. 



Phlox, 228, 271. 



Photosyntax, 84. 



Photosynthesis, 84, 302. 



Phycomycetes, 50, 51. 



Physcia, 79. 



Physiology, 297. 



Picea, 179, 181, 182. 



Pileus, 71. 



Pine : see Pinus. 



Pineapple, 215. 



Pinus, 173, 175, 176, 177, 178, 181, 



183, 184, 188, 191, 286. 

 Piperaceae, 258. 

 Pirus, 225, 262, 2 63. 

 Pistil, 199, 200, 219, 220. 

 Pisum, 265. 

 Pith, 285, 287, 288. 

 Planococcus, 76. 

 Plantaginaceae, 275. 

 Plant body, 6. 

 Plant associations, 313. 

 Plasmodium, 74, 75. 

 Plastid, 7, 8. 

 Platycerium, 132. 

 Plerome, 283. 

 Pleurococcus, 21. 

 Plum : see Prunus. 

 Plumule, 210. 

 Pod, 211, 212. 

 Pogonia, 249. 

 Polemoniaceae, 271. 

 Polemonium, 271. 

 Pollen, 174, 176,197,201. 

 Pollen-tube, 179, 180, 181, 187, 202, 



206, 207. 

 Pollination, 181. • 

 Polyembryony, 183. 

 Polymorphism, 63. 

 Polypetaly, 226. 

 Polyporus, 71, 72. 

 Polysiphonia, 44- 

 Polytrichum, 96. 



