584 INDEX. 
Niger, 478. 
Niglit, 476. 
Nigrescens, 478. 
Nigritus, 478. 
Nitidus, 471. 
Nitrogen, 379. 385. 559. 
Nitrous acid gas, 386. 
Niveus, 477. 
Nocturnus, 476. 
Nodding, 487. 
Node, 70. 
Nodes, artiphyllous, 71. 
-, closed, 71. 
■ ■ , compound, 71. 
■ ■ ■, divided, 71. 
■ ■ ■ , entire, 71. 
, pervious, 71. 
, pleiophyllous, 71. 
, simple, 71. 
Nodosus, 450. 
Nodules, 79. 
Nodulose, 109. 
Noeud vital, 70. 
Nomenclature, 528. 
None, 494. 
Noni, 495. 
Normal, 455. 
Novem, 495. 
Noveni, 495. 
Nucamentum, 155. 
Nucleus, 77. 213, *214. 249. 272. 275. 
proligerous, 272. 
Nucula, 231. 239. 
Nuculanium, 235. *239. 
Nudus, 471. 
Nullinervis, 483. 
Nullus, 494. 
Number, 494. 
Numerous, 494. 
Nut, 227. 
, spurious, 230. 
Nutans, 487. 
Nux, 228, 229. 231. 236. 
baccata, 241. 
Ob, 496. 
Oblique, 134. 458. 486. 
Oblong, 456. 
Obtuse-angled, 449. 
Obtusus, 459. 
cum acumine, 45 9* 
Obvolute, 484. 
Obvolutiva, 484. 
Ocellated, 481. 
Ochraceus, 479. 
Ochrea, 144, 145. 
Ochre-colour, 479. 
Ochroleucus, 47&- 
Octa. 495. 
Octo, 495. 
Octoni, 495. 
Odours, 438. 
, fugitive, 438, 439. 
, intermittent, 438. 441. 
, permanent, 438. 
CEdemata, 26. 
Offset, 84. 
Often-bearing, 475. 
Oleaginous, 472. 
Olefiant gas, 388. 
Oligos-, * 494, 495. 
Olivaceus, 479. 
Olive-green, 479. 
Omphalodium, 247. 
One-ribbed, 482. 
One-sided, *487. 493. 
Opaque, 471. 
Operculate, 163. 
Operculum, 142. 266. 
Oplarium, 271. 
Opposite, 113. 238. 488. *491. 
Oppositifolii, 153. 
Orange-colour, 479. 
Orbicular, 456. 
Orbiculus, 170. 275. 
Orbilla, 271. 
Organs, compound, in flowering 
plants, 48. 
, in flowerless 
plants, 258. 
Organs, elementary, * 1 . 296. 
, chemical consti- 
tution of, 289. 
Organs of plants, directions taken 
by the, 406. 
Organs, spurious elementary, 37. 
of vegetation, 146. 
Orgya, 474. 
Orgyalis, 474. 
Orthotropal, 256. *489. 
Orthotropous, 214, *215. 248. 
Oscillatorius, 490. 
Osseus, 472. 
Ostiolum, 275. 
Outline, 455. 
Oval, 456. 
Ovarium inferum, 1 64. 
liberum, 164. 
■ superum, 164. 
Ovary, *193. 516. 
— " -, inferior, 194. 
, parietal, 194. 
, superior, 194. 
Ovate, 456. 
Ovenchyma, 7. 
Ovoidal, 448. 
Ovule, *211. 516. 
Ovules, 193. 
, origin of, 558. 
, structure of, 558. 
