974 



INDEX, 



Nymphxaceae, 536, 586, 600, 

 633, 641, 654, 657. 



Oak, 614. 



Obdiplostemonous, 601, 



Ochnaceae, 660. 



Ochrolechia, 326. 



Octamerous, 642. 



Octants, 351. 



CEdogonieae, 244, 278. 



CEdogonium, 9, 22, 235, 279, 

 897, 945 (Figs. 17, 163, 

 182, 183). 



(Enothereae, 662. 



Oidium, 311. 



Oil, 52, 91,706,715. 



Oleaceae, 643, 658 (Fig. 448). 



Olfersia, 436. 



Omphalaria, 328. 



Omphalodes, 598. 



Onagrariese, 555. 



Onopordon, 640. 



Oocardium, 248. 



Oogonium, 3, 234, 267, 271, 

 273, 279, 281 (Figs, 163, 

 177, 179, 181, 183, 185). 



Oophore, 225, 342,385,421, 

 488. 



Oosphere, 224, 234, 267, 350, 

 355, 373, 425, 446, 486, 

 523, 580, 897 (Figs. 163, 

 177, 179, 181, 183, 185, 

 236, 240, 256, 295, 314, 



331, 354,355, 399). 

 Oospore, 224, 234, 343, 471, 



585. 

 Oosporese, 244, 267. 

 Opegrapha, 329. 

 Open bundles, 650. 

 Opening and closing of 



flowers, 872. 

 Operculum, 345, 381 (Fig. 



266). 

 Ophioglosseae, 385, 391, 410. 

 Ophioglossum, 410, 412, 414, 



958 (Figs. 288, 290). 

 Ophrydeae, 557, 603, 628. 

 Opuntia, 538, 566. 

 Crchideae, 557, 576, 579, 



583, 586, 593, 603, 618, 



627, 633, 908, 960 (Fig. 



410). 

 Orchis, 571, 578 (Figs. 397, 



418). 

 Order of succession of the 



parts of the flower, 608. 

 Organic centre, 203. 

 Organs of plants, 149. 

 Origin of species, 920. 

 Ornithogalum, 580, 588. 

 Orobanche, 214, 241, 634, 



649, 935- 

 Orobancheae, 585, 658. 

 Orthostichy, 188 (Fig. 154). 



Orthotropic, 854. 

 Orthotropous, 492, 570. 

 Oscillatorieae, 246, 247. 

 Osmunda, 423, 435. 

 Osmundaceae, 391, 410, 437, 



440. 

 Ouvirandra, 625. 

 Ovary, 493, 497, 558 (Figs. 



382-395). 

 Ovule, 487, 491, 497, 498, 

 570 (Figs. 343, 347- 

 349, 397, 398, 400). 

 development of, in An- 



giosperms, 576. 

 development of, in Go- 



niferae, 520. 

 development of, in Gne- 

 taceae, 529. 

 Oxalic acid, 699. 

 Oxalideae, 660, 879. 

 Oxalis, 882, 891. 

 Oxygen, 691, 696, 698. 

 Oxy-salts, 698. 

 Ozothallia, 282. 



Paeonia, 614. 



Paleae, 150, 435, 602, 631. 



Paliurus, 599. 



Pallisade - parenchyma, 84, 



533, 735- 

 Palmaceae, 624, 631. 

 Palmella, 248. 

 Palmellaceae, 46, 244, 248, 



329- 

 Palms, 620, 623, 629, 938. 

 Pandanaceae, b^L. 

 Pandorina, 234, 254 (Figs. 



162, 167). 

 Pandorineae, 244, 253. 

 Panicle, 596. 



Panicled inflorescences, 596. 

 Pannaria, 328. 

 Papain, 708. 

 Papaver, 87, 616, 641, 647, 



654 (Fig. 464). 

 Papaveraceae, 87, 647, 657. 

 Papayaceae, 87, 659. 

 Papilionaceae, 607, 609, 613. 

 Pappus, 538, 617, 940. 

 Paraphyses, 309, 310, 325, 



336, 338, 343, 370, 435, 



441 (Figs. 205, 219, 227, 



253)- 

 Parasites, 214, 242, 649, 720, 



942. 

 Parastichy, 194. 

 Paratonic action of light, 



757- 

 Parenchyma, 83 (Fig. i). 

 Parietales, 659. 

 Paris, 188, 606 (Fig. 147). 

 Parmelia, 327. 



Parnassia, 642,856 (Fig. 44 1 ). 

 Paronychieae, 645, 661. 



Parthenogenesis, 275, 593, 



902. 

 Passiflora, 536, 865, 870. 

 Passifloraceae, 659. 

 Pastinaca, 183 (Fig. 140). 

 Paullinia, 653. 

 Pectinaceoussubstances,7o6. 

 Pediastrum, 70, 256 (Figs. 



54, 169). 

 Pedicularis, 588, 648. 

 Peduncle, 491. 

 Peganum, 610, 644. 

 Peissomelia, 289. 

 Pellia, 352, 360, 395, 422, 



945- 

 Peltigera, 319. 

 Pelvetia, 282. 

 Penicillium, 226, 306, 314. 

 Pentamerous, 641. 

 Peperomia, 579. 

 Perianth, 490, 528, 538. 

 Periblem, 147, 163, 500, 952 



(Fig. 114). 

 Pericambium, 115, 134, 167 



(Figs. 96, 106, 114, 125). 

 Pericarp, 594, 615. 

 Perichaetium, 343, 371. 

 Periderm, 95, 106. 

 Peridium, 306, 333, 340 (Fig. 



231). 

 Perigynae, 661. 

 Perigynium, 34.3, 350 (Fig. 



236). 

 Perigynous, 559. 

 Periodic movements of or- 

 gans, 878. 

 Periodicity of growth in 



length, 817, 823. 

 Periodicity of tension, 808. 

 Perisperm, 492, 586. 

 Peristome, 381 (Figs. 266, 



267, 273). 

 Perithecium, 308, 312, 313, 



317, 323 (Figs. 207, 208, 



209). 

 Permanent tissue, 82. 

 Peronosporeae, 244, 275, 955. 

 Persea, 555. 

 Pertusaria, 319, 326 (Fig. 



220). 

 Petal, 538. 

 Petiole, 212, 640. 

 Peziza, 11, 310 (Figs. 205, 



206). 

 Phaeosporeae, 283, 956. 

 Phalloideae, 341. 

 Phallus, 340 (Fig. 231). 

 Phascaceae, 377, 380. 

 Phascum, 375. 

 Phaseoius, 24, 134, 135, 147, 



561, 636 (Figs. 21, 106, 



107, 113, 385, 437). 

 Phegopteris, 430, 441. 

 Phelloderm, 107 (Fig. 90). 



