XVI 



INDEX. 



Orobanche 40, 86 



Orontium. 57 



Oryzopsis 67 



Osmorhiza 21 



Osmunda 74 



Ostrya 49 



Oxalis 10 



Oxycoccus 32 



P 



Panicum 65, 89 



Papaver 3, 75 



Papavekace^: 3,75 



Pardanthus 53 



Parietaria 48, 88 



Parnassia 18 



♦Parthenium 82 



Paspaluni 65, 88 



Pastinaca 22 



*Pavoiiia 77 



Pedaline^ 41, 86 



Pedicularis 40 



Pellsea 73 



Peltandra 57 



Penthorum 18 



Pentstemon 39 



*Perilla 



Petasites 30 



Petunia 38, 85 



♦Peucedanum 81 



Phalaris 67,89 



Phaseolus 14 



Phegopteris 73 



♦Philibertia 84 



Phleum 68, 89 



Phlox 36 



Phoradendron 47 



Phragmites 69 



Phryma 41 



Phyllanthus 48, 88 



Physalis 38,85 



Physostegia 43 



Phytolacca 46 



Ph YTOLAOOAOE^ 46 



Picea 71 



*Picris 83 



Pilea 48 



Pimpinella 21 



Pinus 71 



PlPERAOE^ 47 



♦Pisum 80 



Plantagine^. 44, 86 



Plantago 44, 86 



Platan AOE^ 49 



Platanus 49 



Pluchea 27 



Plumbagine.* 34, 84 



Poa 70 



Podophyllum 3 



Podostemaoe^e 47 



Podostemon 47 



Pogonia 52 



Polanisia 6, 76 



Polemoniace^ ....36, 84 



Polemonium 36 



*Polycarpon 77 



*Polycnemon 87 



Polygala 7 



Polygale^ 7 



polygonace^ 46, 87 



Polygonatum 54 



Polygonum 46, 87 



Polymnia 28 



Polypodium 72 



Polypogon 68 



Polypremum 36 



Pontederia 55 



PONTEDEEIAOE^ 55 



Populus 51 



Portulaca 9, 77 



POETULACE.E 9, 77 



Potamogeton 58 



Potentilla 16, 80 



Poterium 16 



Prenanthes 31 



Primulaoe^ 34, 84 



Proserpinaca 18 



Prunus 15 



Psilocarya 60 



*Psoralea 79 



Ptelea 11 



Pteris 73 



Pterospora 34 



Pycnanthemum 42 



Pyrola 33 



Pyru8 17 



Pyxidanthera 34 



Q 

 Quercus 49 



R 

 Ranunculace.e..., 1, 75 



Ranunculus 1, 75 



Raphanus 5, 76 



*Rapistrum 76 



Reseda 6, 76 



Resedaceje 6, 76 



Rhamne^e 11 



Rhamnus 11 



Rhexia 19 



Rhinanthus 40 



Rhododendron 33 



Rh odor a 33 



Rhus 12 



*Rhynchosia 80 



Rhyncospora 61 



RJiyncospora 60 



Ribes. 18 



*Ricinus 88 



*Richardsonia 81 



Robinia 13 



Rosa 16 



Rosacea 15, 80 



Roubieva 45 



Rubiaoe^ 23, 81 



Rubus 15, 80 



Rudbeckia 28 



Ruellia 41 



Rumex 46, 87 



Ruppia 59 



Ruta 11 



Rutaob^ 11 



S 



Sabbatia ♦. 36 



Sagina 8, 77 



Sagittaria 58 



Salioine^ 50 



Salicornia 45 



Salix 50 



Salsola 46 



Salvia 43, 86 



Sambucus 23, 81 



Samolus 34 



Sanguinaria 3 



Sanicula 21 



Santalaoe^ 47 



