CLASSIFICATION AND NOMENCLATURE. 



007 



Ophioglossaceae, 352, 354. 

 Ophioglossum, 354. 

 Ophrydinae, 506. 

 Ophrys, 506. 

 Orache, 523. 

 Orange, 544. 

 Orchidaceae, 481. 503. 

 Orchidales, 481, '503. 

 Origanum, 563. 

 Orchis, 504 (Figs. 315, 



316). 



Ornithogalum, 497. 

 Orobanchaceae, 513, 566. 

 Orobanche, 566. 

 Orobus, 559. 

 Orpine, 561. 

 Orthoclada, 488. 

 Orthoploceae, 536. 

 Orthospermeae, 549. 

 Orthotrichum, 339, 345. 

 Oryza, 489. 

 Oryzeae, 489. 

 Oscillaria, 244 (Fig. 135). 

 Oscillariaceae, 244. 

 Osmunda, 359, 372 (Fig. 



261), 406. 

 Osmundacete, 352, 364, 



372. 



Ostrya, 520. 

 Oxalidacese, 513, 543. 

 Oxalis, 543. 

 Ox-eve Daisy, 580. 

 Oxlip. 572. 

 Oxycedrus, 436. 

 Oxymitra, 324. 



Paeon ia, 530. 

 Paeonieae, 530. 

 Paigle, 572. 

 Palm, 485. 

 Palmace*, 481, 484. 

 Palmales, 481, 484. 

 Palmella, 247. 

 Palmodictyon, 248. 

 Palmophyllum, 248. 

 Pampas Grass, 491. 

 Pandorina. 249 (Fig. 138). 

 Panicea?, 489. 

 Panicoidese, 489. 

 Panicum, 487 (Fig. 300). 

 Pannaria, 306. 

 Pansy. BBS. 

 Papaver. 474, 533. 

 Papaveracpae, 512, 5H3. 

 Paper Mulberry, 515. 

 Papilionese, 557. 

 Papyrus, 492. 

 Pariana, 488, 492. 

 Parietales, 512, 533. 

 Parietaria, 515. 



Paris, 461 (Fig. 277), 499 Phegopteris, 372. 



(Fig. 310). Philodendroi.l,,.. IKJ. 



Parmelia, 307. 



Parnassia, 561 (Fig. 373). 



Parnassieae, 560. 



Paronychieae, 532. 



Parsley, 550. 



Parsley Fern, 372. 



Parsnip, 550. 



Passiflorales, 513, 550. 



Pastinaca, 550. 



Patchouli, 563. 



Paulou-nia, 564. 



Pea, 559. 

 i Peach, 554. 

 I Pearl- wort, 532. 

 ! Pear-tree, 556. 

 | Pediastrum, 253. 



Pedicularis, 565. 



Pelargonium, 542. 



Pellia, 324, 330. 



Peltigera, 306, 307. 



Pelvetia, 268. 



Penicillium. 278, 291 

 (Fig. 170), 295. 



Penny-cress, 537. 



Pentstemon, 564. 



Peony, 530. 



Peplis, 553. 



Perisporiacese, 295. 



Perisporieae, 295. 



Peronospora, 279, 287. 



Peronosporaceae, 277, 287. 



Personates, 513, 564. 



Pertusaria, 308 (Fig. 

 190). 



Petaloidea, 481, 494. 



Petasites, 580. 



Petroselinum, 550. 



Petunia, 569. 



Peucedaneae, 550. 



Peucedanum, 550. 



Peziza,277,297(Fig.l77). 



Pezizaceae, 296. 



Phacidiese, 297. 



Phacotus, 249. 



Phjeogamse, 265, 268. 



Phseophycese, 238, 263. 



Phseosporae, 264, 265. 



Phalarideae, 489. 



Phalans, 489. 



Phalloidefe, 304. 



Phallus, 305. 



Phanerogamia, 234, 394. 



Phascum, 339. 312. 



Ph as. .,>!.*, 559. 



Phaseolus, 559. 



Pheasant's Eye, 529. 



Pheasant's Eye Narcis- 

 sus, 508. 



Phleum, 490. 



Phlox, 567. 



Ph. mix, 477 (Fig. 291). 

 485 (Fig. -j 



Phormium, 498. 



Photinia, 557. 



Phragmites, |:>1. 



j Phycochromacese, 244. 



Phycomycetes, 280, 285. 



Phyllantluis. :,-_'7. 

 : Phyllobium, 21*. 



Phyllocladus. |:;7. 

 | Phyllodoce, .",7:;. 



Phylloglossum, 386. 

 ! Physalis, 568. 



Physcia, 307. 



Physospermum, 550. 



Physostigma, 559. 



Physureae, 507. 



Phytelephas, 4*0. 



Phyteuma, 571. 



Phytophthora, 287 (Figs. 

 167, 168), 2>*. 



Picea, 425 (Fig. 249), 426 

 (Fig. 250), 428 (Fig. 

 252), 435. 



Picris, 582. 



Pilacre, 304. 



Pilacreae, 804. 



Pilularia, 373, 380. 



Pimpernel. .".,-_'. 



Pimpinella, 550. 



Pinaster, 435. 



Pine, 435. 



Pinea, 435. 



Pine-apple, 501 (Fig. 

 311). 



Pinguicula, 566. 



Pink, 532. 



Pinnularia, 265 (Fig. 

 152). 



Piuoideae, 433. 



Piiius.-|M7,Fiir.2U!.-l-w 

 (Fig. 21* . l-'7 Fi-. 

 251), 433 (Fig. 254), 

 435. 



Piptocephalideae, 285. 



Pisum, 559. 



Pithophora, _'"._ 



Plagiochila. 326 (Fig. 

 201), 330. 



Plantaginacese, 513, 565. 

 ' Plantago, 565 (Fig. 879;. 

 j Plantain, 50-J : 

 ; Platycerium, 860. 



Platvcodon. ~>7l. 

 \ Pleospora. 27 

 i Pleurocarp*, 345. 



