INDEX. 



351 



Nepentbaceae, 338 



Nepenthes, 285, 386 



Nettle, 356 



Nettlevvorts, 331 



Nicotine, 83 



Nightshades, 338 



Nitella, 805 



NitelleiJB, 305 



Nitrogen-assimilation, 78 



Norfolk Islaud Pine, 349 



Nostoc, 136 



Nostocaoese, 139 



Nucellus, 353 



Nuclear disk, 10 



Nuclear-hyaloplasm, 3 



Nucleoles, 3 



Nucleus, 1 



NudiflorfE, 334 



Number of species of plants, 117 



Nut, 316 



Nutation, 107 



Nutmegs, 336 



Nutrition, 74 



Nutrition of higher plants, 84 



Nutrition of hysterophytes, 85 



Nutrition of moss- like plants, 83 



Nyotaginacese, 338 



Nyctitropism, 109 



Nymphaeacea3, 337 



Oak, 356, 393, 317, 338 

 Oakstem, 365 

 Oat, 856, 373 

 Oat-smut, 197 

 Ochnacese, 339 

 OedogoniacesB, 158 

 Oedogonium, 159 

 OlacacesB, 387 

 Olacads, 337 

 Oleacese, 383 

 Oleasters, 338 

 Olives, 333 

 Onagraceae, 336 

 Onagrads, 336 

 Onoclea, 335 

 OBgone, 150, 151, 154 

 OBsphere, 253 

 oospore, 133 

 Ophioglossaceae, 238 

 Ophioglossum, 223 

 Opium, 389 

 Orchidacese, 336 

 Orchids, 369, 373, 336 



Orchis, 369 



Ornamental plants, 387 



Orobanchacese, 334 



Oscillaria, 136 



Oscillariaceee, 139 



Osmunda, 335 



Ostrich- fern, 335 



Ovary, 349, 310 



Ovule, 71, 338, 343, 352, 810 



Oxalis, 814 



Packing, 316 

 Pahn, 893 

 Palmacese, 334 

 Palms, 273. 384 

 Palm-stem, 265 

 Pandanaceae, 324 

 Pandorina, 137 

 Panicle, 303 

 Pansy, 254 

 Papaveraceae, 827 

 Papilionaceae, 335 

 Paraliuin, 3 

 Paraphyses, 181 

 Parenchyma, 21 

 Parental care, increased, 115 

 Parietales, 327 

 Passifloracese, 336 

 Passiflorales, 836 

 Passion-flowers, 888, 336 

 Pear, 388 

 Peat-mosses, 315 

 Pedaliacese, 334 

 Pediastrum, 185 

 Pedicel, 303 

 Penaeaceae, 338 

 Penicillium, 179 

 Pepo, 316 

 Peppers, 881 

 Pepperworts, 330, 335 

 Perennials. 393 

 Perianth, 304, 307 

 Periblem, 40 

 Pericarp, 170, 314 

 Peridium, 133, 200 

 Permanent tissue, 20 

 Peronospora, 153, 156 

 Peronosporaceae, 158 

 Personales, 333 

 Perisporiacea;, 175 

 Perithecia, 181 

 Petals, 304 

 Petiole, 296 



