INDEX 



537 



Nectarines, 438. 



Needle leaves, 94. 



Needle-like leaves, 94. 



Nemalion, 261, 262, 264. 



Netted veined leaves, 79. 



Nettle family, 434. 



Neuter (flowers), 170. 



Neutral flowers, 145, 170. 



Nicotiana tabacum, 447. 



Nightshade family, 446. 



Nitella, 4, 248-250. 



Nitrate bacteria, in, 113, 127. 



Nitrates, in, 114, 125-127. 



Nitric acid, 114, 127. 



Nitrification, 126-130. 



Nitrite bacteria, in, 113, 127. 



Nitrites, in, 113. 



Nitrobacter, 127. 



Nitrogen, 20, 108, 114, 124-130. 



Nitrogen, fixation of, 127. 



Nitromonas, 127. 



Nitrous acid, 127. 



Noble liverwort, 334. 



Node, 56, 248. 



Nostoc, 255, 268, 302. 



Nostoc linkii, 256. 



Nucellus, 9, 15, 200-202, 391, 392, 

 395.411,414 4i6. 



Nucleolus, 233, 234. 



Nucleus, 4, 233, 234, 244, 245, 247, 

 248, 253, 331. 



Nutmeg, melon, 449. 



Nutrition, of parasites and sapro- 

 phytes, 134-141. 



Nutrition, special aspects of in 

 plants, 124-133. 



Nuts, 205, 207, 208. 



Oak, shoot of, 73. 



Oat flower, 176, 177. 



Oat smut, 306. 



Oats, 425. 



(Edogonium, 232, 242-244, 251. 



(Edogonium undulatum, 243, 251. 



(Enothera biennis, 157-161, 191. 



(Enothera lamarkiana, 161, 491. 



(Enothera nanella, 492. 



Oil, 24. 



Olea europaea, 446. 



Oleacea 446 



Olive family, 446. 



Onagra biennis, 157, 191. 



Onion mildew, 284. 



Onoclea sensibilis, 359, 369. 



Onoclea struthiopteris, 370. 



Ontogenetic, 487. 



Ogonium, 242-248, 251, 259, 260, 



281, 284, 285. 

 Oospore, 243, 244. 

 Operculum, 349. 

 Ophioglossales, 381. 

 Ophioglossum, 381. 

 Oranges, 442. 

 Oryza sativa, 426. 

 Orchid family, 181. 

 Orchidiaceae, 181. 

 Orchids, 181, 189, 193-195. 

 Orchil, 303. 

 Orders, 226. 



Organic compounds, 124. 

 Orthotropus, 200. 

 Oscillatoria, 255, 268. 

 Oscillatoria frcelichii, 255. 

 Oscillatoria princeps, 255. 

 Osmunda cinnamomea, 370. 

 Osmunda claytonia, 370. 

 Osmunda regalis, 370. 

 Ostrich fern, 370. 

 Otthia morbosa, 292. 

 Ovary, 13, 19, 144, 15?, 156, 160, 



163, 165, 169, 177, 181, i&5, 205, 



405, 409. 



Overproduction, 493. 

 Ovule, 6, 144, 152, 156, 182, 200, 



204, 391, 403, 404. 

 Ovule case, 405, 414, 419. 

 Ovule coats, 414. 

 Ox eye daisy, 151. 

 Oxycoccus macrocarpus, 446. 

 Oxycoccus oxycoccus, 446. 

 Oxydendrum arboreum, 445. 

 Oxygen, 20, 105-110, 114, 116-123, 



124, 125. 

 Oyster plant, 449. 



Palet, 173-177, 3 6 - 

 Palm family, 429. 

 Palmaceae, 429. 

 Palmate leaves, 79. 

 Pandanus, 88. 



Pandorina morum, 241, 257. 

 Panicle, 149, 153. 

 Papilionacege, 166, 439. 

 Papilionaceous, 146, 163, 166. 

 Parallel veined leaves, 79. 

 Paraphyses, 300, 348. 

 Parasites, 134-137, 292. 

 Parasites, nutrition of, 134 272. 



