INDEX 



399 



Ophioglossales, 257, 352 

 Ophioglossuni, 352 

 Opiliaccae, 371 

 Opposite leaves, 292 

 Opuntia, 310, 370 

 Orchidaceae, 3G0 

 Orchidales, 299, 360 

 Orchids, 299, 3G0 

 Orchis, 299, 3G1 

 Orders, 159 

 Oreodoxa, 358 

 Organic Acids, 140 

 Origin of Phyla, 161 



of Zygophyceae, 181 

 Orobanchaceae, 321, 307 

 Orthotrichaceae, 350 

 Orthotrichum, 350 

 Oryza, 359 

 Oryzeae, 359 

 Oscillatoria, 165, 330 

 Oscillatoriaceae, 165, 330 

 Osmosis, 72 

 Osmunda, 352 

 Osmundaceae, 352 

 Ostrich-fern, 259 

 Ostropaceae, 343 

 Ostrya, 372 

 Ovary, 286, 292 

 Ovulate, 275 

 Ovule, 273 

 Oxalic acid, 141 

 Oxalidaceae, 362 

 Oxalis, 326, 362 

 Oxidases, 153 



Padina, 337 

 Palea, 297 

 Palct, 297 

 Palisade tissue, 292 

 Palmaceae, 358 

 Palmales, 296, 358 

 Palmatin, 143 

 Palmcllales, 171, 332 

 Palmettos, 300 

 Palmitic acid. 140, 143 

 Palms, 296, 358 

 Panax, 372 

 Pandanaceae, 357 

 :::4^andorina, 172, 332 



Paniceae, 359 



Panic Grasses, 359 



Panicum, 359 



Pannariaceae, 340 



Pansy, 306 



Papaver, 364 



Papaveraceae, 364 



Papaws, 361 



Pappus, 312 



J»arallel veined, 295 

 VJaraphyses, 203, 215 

 ""l^arasitic habit, 320 



Paratheliaceae, 343 



Paratonic movements, 123 



Parenchyma, 29 



Parental care, 110 



Parietal placentae, 303 



Parkeriaceae, 352 



Parmelia, 216, 340 



Parmeliaceae, 340 



Paronj^chia, 364 



Parsleys, 372 



Parsnip, 311 



Parthenocissus, 371 



Parthenogenesis, 324 



Passage of Water, 73 



Passiflora, 364 



Passifioraceae, 363 



Passion Flowers, 363 



Pastinaca, 311, 372 



Patellariaceae, 342 



Path of the Water, 75 



Pathology, 133 



Pea, 305, 308 



Peach, 314 



Pear, 313 



blight bacteria, 169 



Peat-mosses, 251, 349 



Pectase, 153 



Pectose, 5 



Pedaliaceae, 367 

 '^l5*ediastrum, 172 



Pedicularis, 367 



Peireskia, 370 



Pelargonium, 306, 362 



Pellia, 349 



Peltigcra, 340 



Pcltigcraceae, 340 



Penaeaceae, 371 



Pcnicillium, 222, 344 



Penicillus, 195, 334 



