800 



INDEX, PART I. 



Polytrichum, 359, 371 



(Fig. 254). 

 Pomeffi, 634 (Fig. 433). 

 Pomegranate, 632. 

 Pondweed, 554. 

 Ponte<^eria, 559. 

 Pontederiacea5, 538, 559. 

 Pooideas, 548. 

 Poplar, 585. 

 Poppy, 601. 

 Populus, 585. 

 Porocyphus, 321. 

 Porotbelium, 316. 

 Porphyra, 272, 

 Porphyrinae, 272. 

 Portugal Laurel, 633. 

 Portulaca, 600. 

 Portulaceffi, 573, 600. 

 Posidonia, 553. 

 Posidonieffi, 553. 

 Potamogeton, 554. 

 Potamogetoneae, 553. 

 Potato Plant. 649. 

 Potentilla, 495, 634. 

 Potentilleffi, 633 (Fig. 433). 

 Poterieae, 633. 

 Poterium, 633. 

 Pothoideae, 540. 

 Pothos, 540. 

 Pot Marigold, 664. 

 Pottia, 370. 

 Pottiaceae. 370. 

 Preissia, 336, 343. 

 Prickly Samphire, 626. 

 Primrose, 653. 

 Primula, 508 (Fig. 322), 



654 (Fig 4H). 

 Primulaceffi, 489, 504, 575, 



653. 

 Priraulales, 575, 653. 

 Privet, 652. 

 Prosopanche, 589. 

 Prosopis, 589. 

 Protea, 586. 



Proteaceffi, 513, 573, 586. 

 Proteales, 573, 586. 

 Protobasidiomycetes, 312, 



315. 

 Protococcaceae, 236, 321. 

 ProtococcoideEe, 235, 236. 

 Protomyces, 308. 

 Pruneae. 632 (Fig. 433). 

 Prunella, 643. 

 Prunophora. 633. 

 Prunus, 632. 

 Psalliota, 312, 317. 

 Psathyrella, 313. 

 Pspudocallitriche, 623. 

 Pseudolarix, 484. 

 Pseudoneura, 348. 

 Pseudosolaneae, 644. 



Pseudostrobus, 485. 

 Pseudotsuga 484. 

 Psilotacete, 375, 3«0, 425. 

 Psilotum, 373, 425. 

 Ptelea, 515. 614. 

 Pterideae, 405. 

 Pteridium, 405. 

 Pteridopbyta, 217, 372. 

 Pteris, 389 (Fig. 257), 397 



(Fig. 262), 398 (Fig. 



264), 405. 

 Pterocladia, 272. 

 Pterostegia, 593. 

 Ptilideffi, 352. 

 Ptilidium, 352. 

 Ptilota, 272. 

 Puccinia, 278, 304 (Figs. 



214, 215). 

 Pucciniopsis, 307. 

 Puffball, 310, 318. 

 Pulicaria, 664. 

 Pulmonaria, 650. 

 Pumpkin, 628. 

 Punctaria, 257. 

 Punctarieae, 257. 

 Punica, 632. 

 Punicaceae, 632. 

 Pnrple Beech. 583. 

 Purslane, 600. 

 Pycnopbycus, 266. 

 Pylaiella, 257, 259. 

 Pyrenolicheues, 320. 

 Pyrenomycetes, 301. 

 Pyrola,655 (Fig. 455), 656. 

 Pyrolaceffi, 503, 575, 656. 

 Pyronema, 276, 298 (Fig. 



207). 

 Pyrus, 634. 

 Pythium, 291, 292. 



Quaking-grass, 549. 

 Queltia, 568. 

 Qnercus, 583 (Fig. 388). 

 Quillaieae, 635. 

 Quince, 634. 



Racoblenna, 321. 



Eacodium, 321. 



Racomitrium, 370. 



Radiola, 613. 



Radish, 605. 



Radula. 335 (Fig. 239), 



343, 352. 

 Rafflesia, 539. 

 Rafflesiese, 589. 

 Ramalina, 322. 

 Rameya, 595. 

 Ramondia, 646. 

 Rampion, 657. 

 Ranales, 573, 591. 

 RanunculaceBB, 573, 591. 



Ranunculus, 692 (Fig. 



397). 

 Rapa, 604. 

 Rape, 605. 

 Raphaneas, 605. 

 Raphanus, 603 (Fig. 407), 



604. 

 Rapbia, 543. 

 Raphiolepis, 635. 

 Raspberry, 634. 

 Rattle, 645. 

 Ravenala, 561. 

 Reaumuria, 609. 

 Reboulia, 337, 342. 

 Red-wood Pine, 485. 

 Reed, 549. 

 Reed-grass, 548. 

 Reed-mace, 542. 

 Reindeer Moss, 322. 

 Reseda, 507, 511, 606. 

 Resedacese 573. 606. 

 Rest-harrow, 63*1. 

 Restiace8e,538, 552. 

 Restiales, 538. 552. 

 Rhamnaceae, 498, 501, 574, 



618. 

 Rhamnus, 618 (Fig. 421). 

 Rheum, 598. 

 Rhinanthoideae 644. 

 Rbinantbus, 645. 

 Rbinopetalum, 511. 

 Rbipidonema, 320, 321. 

 Rhipsalis. 628. 

 Rhizocarpae, 379, 406. 

 Rbizoclonium, 241. 

 Rbizomorpha, 314. 

 Rhizophora, 632. 

 Rhizopboraceae, 574 632. 

 Rhizophyllidaceae, 272. 

 Rhizophyllis, 272. 

 Rhizopogon, 317,318 (Fig. 



224). 

 Rhodocbitou, 644. 

 Rbododendroideae. 655. 

 Rhododendron. 655. 

 Rhodomela, 272. 

 Rbodomelaceas, 272. 

 Rhodopbyceae, 221, 267. 

 Rhodophyllidaceae, 272. 

 Rhodophyllis, 272. 

 Rhodoraceae, 503. 

 Rhodotypus, 632. 

 Rhodymenia, 272. 

 RhodymenJaceae 272. 

 Rhodymeniuae, 272. 

 Rhubarb, 598. 

 Rhus, 618 (Fig. 420). 

 Rhytiphloea, 272. 

 Rhytisma, 303. 

 Ribes. 509 (Fig. 324), 640 



(Fig. 441). 



