416 



INDEX. 



Obtusus cum acumine, ii. 357 



Obvolute, ii. 374 



Obvolutiva, ii. 374 



Ocellated, ii. 373 



Ocellatus, ii. 373 



Ochraceus, ii. 371 



Ochrea, i. 306, 308 



Ochre-colour, ii. 371 



Ochroleucus, ii. 371 



Octo, ii. 383 



Octoni, ii. 383 



(Edemata, i. 66 



Offset, i. 182 



Often-bearing, ii. 369 



Oleaginous, ii. 366 



Olefiant gas, ii. 318 



Oligos, ii. 383 



Olivaceus, ii. 371 



Olive-green, ii. 371 



Omphalodium, ii. 31 



One-ribbed, ii. 373 



One-sided, ii. 377, 381 



Opaque, ii. 365 



Operculate, i. 327 



Operculum, i. 298 ; ii. 107 



Oophoridia, ii. 99 



Oophorids of Lycopods, ii. 98 



Oplarium, ii. 118 



Opposite, i. 243 ; ii. 378, 380 



Oppositifolii, i. 317 



Orange-colour, ii. 371 



Orbicular, ii. 354 



Orbiculus, i. 338, 337 ; ii. 120 



Orbilla, ii. 117 



Orchids, vitality in, ii. 146 



Organic mucus, i. 6 



Organography, i. 6 



Organs, compound in flowering plants, 



i. 132 

 in flowerless plants, 



ii. 82 

 -, elementary, i. 



ii. 171 



-, chemical consti- 

 tution of, ii. 162 



- of fructification, i. 309 



- for secretion, ii. 306 



- of plants, directions taken by 



the, ii. 133 



-, spurious elementary, i. 92 

 of vegetation, i. 308 



Orgya, ii. 368 



Orgyalis, ii. 368 



Orthotropal, i. 397; ii. 60, 378 



Orthotropous, ii. 378 



Oscillatorius, ii. 379 



Osseus, ii. 366 



Ostiolum, ii. 121 



Outline, ii. 353 



Oval, ii. 354 



Ovarium inferum, i. 328 



liberum, i. 328 



Ovarium superum, i. 328 

 Ovary, i. 363 



, inferior, i. 328, 363 



, parietal, i. 364 



, superior, i. 328 



, its modifications, i. 364 



Ovate, ii. 354 

 Ovenchyma, i. 21 

 Ovoidal, ii. 348 

 Ovule, its forms, i. 397 



, its development, i. 404 



-, ascending, i. 398 



-, erect, i. 398 



-, pendulous, i. 398 



-, suspended, i. 398 



-, its reduction to a nucleus, i. 402 



tubes, ii. 235 



Ovular sacs, i. 395 

 Ovules, i 363, 391 



, origin of, i. 395 



, structure of, i. 395 



, of Loranthads, i. 394 



Oxalate of lime, i. 107 

 Oxalids, vitality in, ii. 147 

 Oxide of arsenic, ii. 150, 152 



of iron, ii. 280 



of manganese, ii. 280 



Oxygen, ii. 213 



Pagina, inferior, i. 262 



superior, i. 262 



Paillette, i. 311 

 Painted, ii. 373 

 Paired, ii. 361 

 Palaceous, ii. 365, 379 

 Palate, i. 334 

 Paleaceous, i. 328 

 Paleaj, i. 311, 312, 313 

 Paleote, i. 313 

 Pales, i. 313 

 Pale yellow, ii. 371 

 Palm, ii. 368 

 Palm- veined, i. 271 

 Palmaris, ii. 368 

 Palmate, ii. 359 

 Palmatifid, i. 271 ; ii. 360 

 Palmatilobed, i. 271 ; ii. 360 

 Palmatiparted, i. 271 ; ii. 360 

 Palmatisected, i. 271 ; ii. 360 

 Palmiformis, ii. 374 

 Palminervia, i. 267 

 Palminervis, ii. 374 

 Palm structure, i. 227 

 Palmus, ii. 368 

 Panduratus, ii. 355 

 Panduriformis, ii. 355 

 Panicle, i. 322, 323 



, deliquescent, i. 322 



, simple, i. 322 



Papery, ii. 366 

 Papilionaceous, i. 335 



