798 



INDEX, PART I. 



Oak, 303, 582. 

 Oat, 549. 

 Oat-grass, 5 '9. 

 Ocblandra, 5 17. 

 Ocimoideee, 642. 

 Ociiuum, 642. 

 Octaviana 313, 317. 

 Odontia, 316. 

 (EdogouiacesB, 243, 248. 

 (Edotfonium, 249 (Fig. 



178). 



(Enanthe, 625. 

 (Enothera, 629. 

 Oil Palin, 544. 

 Old Man's Beard, 591. 

 Olea, 508, 652. 

 Oleacese, 501, 575, 652. 

 Oleiueee, 652. 

 Olfersia, 405. 

 Olibanum, 615. 

 Oligoporus, 313. 

 Olive, 652. 

 Olpidiopsis, 286. 

 Olpidium, 286. 

 Omphalaria, 321. 

 Onagraceee, 506, 520, 574, 



629. 



Oncidiinse, 564. 

 Oncidium, 567. 

 Oncocyclus, 569. 

 Onion, 553. 

 Onobrychis, 637. 

 Onoclea, 390, 405. 

 Onouis, 636. 

 Onopordoa, 664. 

 Oocardium 236. 

 Oocystis, 236. 

 Oomycetes, 276, 280, 290. 

 Opegrapha, 321. 

 Operculatae. 342. 

 Ophioglossaceee, 374, 379, 



381. 



Opbioglossum, 374, 381. 

 Opbiopogon, 559. 

 Opbiopogonoideaa, 559. 

 Ophrydinee, 566. 

 Opbrys, 566. 

 Opuntia. 629. 

 Orache, 587. 

 Orange. 615. 

 Orchidaceee, 501, 511, 538, 



563. 



Orchidales, 538, 563. 

 Origanum, 642. 

 Orcbis, 56 1 (Figs. 370, 



371), 566. 



Ornithogalum, 556. 

 Ornitbopteris, 392. 

 OrobanchaceaB, 575, 646. 

 Orobanche, 646. 

 Orobus, 637. 



Orontium, 533, 540. 

 Orpine, 640. 

 Ortboclada, 547. 

 Orthoploceee, 604. 

 Orthospermese, 625. 

 Orthotrichaceffi, 370. 

 Ortbotricbum, 359, 362, 



370. 



Oryza, 548. 

 Oryze, 548. 

 Oscillaria, 231 (Fig. 164). 

 Oscillariacese 233. 

 Osmanthus, 652. 

 Osmunda, 388, 394 (Fig. 



261), 406. 

 Osmundaceee, 379, 381, 



406. 



Ostr.va, 582. 

 Ouvirandra, 554. 

 Oxalidacete, 496, 574, 613. 

 Oxalis, 613. 

 Ox-eye Daisy, 664. 

 Oxlip, 653. 

 Oxycedrus, 486. 

 Oxycoccos, 656. 

 Oxymitra, 336, 342. 

 Oxyria, 598. 



Pacbygone, 595. 

 Pachygoneae, 595. 

 Padina, 263. 

 Peeonia, 521, 593. 

 Pseonieee, 593. 

 Paigle, 653. 

 Palaqnium, 653. 

 Pallavicinia, 351. 

 Palm, 543. 

 Palmaceffi, 538, 542. 

 Palmales, 538, 542. 

 Palmella, 236. 

 Palmodactylon, 236. 

 Palmodict.yon, 236. 

 Palmophyllum, 236. 

 Palmyra," 543. 

 Pampas Grass, 549. 

 Pancratium, 568. 

 Pandanace, 515, 538, 



541. 



Pandanus, 541. 

 Pandorina, 237 (Fig. 167). 

 Pandorinese, 237. 

 Panicese, 547. 

 Panicoide, 547. 

 Panicum, 546 (Fig. 354). 

 Pannaria, 321. 

 Pansy, 606. 

 Panus, 317. 

 Papaver, 601. 

 Papaveracees, 501, 573, 



600. 

 Papaw, 627. 



Papayacese, 574, 627. 

 Paper Mulberry, 578. 

 Papilionese, 511, 518, 635. 

 Papyrus, 551. 

 Pariana, 547, 550. 

 Parietales, 573, 600. 

 Parietaria, 577. 

 Paris, 559 (Fig. 364). 

 Parlour Palm, 559. 

 Parmelia, 321. 

 Parnas>ia, 526, 639 (Fig. 



440). 



Parnasfeif SB, 639. 

 Paronychieae, 512, 600. 

 Parrot'ia, 641. 

 Parsley, 626. 

 Parsley Fern, 405. 

 Parsnip, 626. 

 Passiflora, 627. 

 Pussifloraceffi, 574, 627. 

 Passiflora) es, 574, 626. 

 Passion Flower, 627. 

 Pastinaca, 626. 

 Patchouli, 642. 

 Patersonia, 569. 

 Paulownia, 644. 

 Pea, 637. 

 Peach, 633. 

 Pearl-wort, 599. 

 Pear-tree, 634. 

 Pediastrum, 242. 

 Pedicularis, 645. 

 Pelargonium, 510, 612. 

 Pellia, 332, 351. 

 Peltigera, 320, 321. 

 Peltolepis, 338, 342. 

 Pelvetia, 266. 

 Penicillium, 278, 296 (Fig. 



205), 301. 

 Penny-cress, 605. 

 Pentstemon, 644. 

 Peony, 593. 



Peperomia, 576 (Fig. 376). 

 Peplis, 630. 

 Pepper, 576. 

 Periploca, 652. 

 PerisporiacesB, 301. 

 Perisporieffi, 301. 

 Periwinkle, 651. 

 Peronospora, 278, 292. 

 Peronosporacese, 278, 291. 

 Persimmon, 653. 

 Personales, 575, 643. 

 Pertusaria, 320. 

 Peruvian Lily, 568. 

 Petaloide, 538, 553. 

 Petalophyllum, 343, 347, 



351. 



Petasites, 492, 663. 

 Petrocelis, 272. 

 Petroselinum, 625. 



