NORTH AMERICAN PLANTS. 
21 
Mitreola, 120 
Mollugo, 81 
Momordica, 108 
Monarda, 138 
Monocera, 171 
Monotropa, 104 
Montia, 83 
Morus, 48 
Muhlenbergia, 171 
Myginda , see Ilex 
Mylocarium, 102 
Myosotis, 139 
Myosurus, 3 
Myrica, 53 
Myriophyllum, 30 
Myrrhis, 2 
Nardus, 171 
Narthecium, 158 
Nemophila, 141 
Nemostylis, 154 
Nectris, see Cabomba 
Negundium, 63 
Neottia, 155 
Nemopanthes, 99 
Nepeta, 138 
Neurosperma, 108 
Nicandra, 132 
Nicotiana, 132 
Nolina, 158 
Nycterium, 132 
Nuphar, 5 
Nuttallia, 19 
Nymphsea, 5 
Nyssa, 38 
Obolaria, 120 
OEnanthe, 2 
CEnothera, 29 
Oldenlandia, 115 
Olea, 126 
Onoclea, 174 
Onosmodium, 139 
Ophioglossum, 139 
Ophiorhiza , see Mitreola 
Oplotheca, 88 
Oporinca, 113 
Opuntia, 28 
Orchis, 155 
Origanum, 138 
Ornithogalum, 160 
Ornus, 126 
Orobanche, 129 
Orobus, 45 
Orontium, 167 
Orthopogon , see Panicum 
Orthocarpus, 45 
Oryzopsis, 171 
Osmorhiza, 2 
Osmunda, 174 
Ostrya, 50 
Oxalis, 71 
Oxybaphus, 93 
Oxycoccus, 103 
Oxydenia , see Leptcchloa 
Oxyria, 92 
Oxytropis, 45 
Pachysandra, 55 
Poeonia, 3 
Panax, 1 
Pancratium, 152 
Panicum, 171 
Papaver, 4 
Parietaria, 55 
Paronychia, 87 
Parnassia, 24 
parrya, 9 
Parthenium, 113 
Paspalum, 171 
Passiflora, 75 
Pastinaca, 2 
Pavia, 61 
Pectis, 113 
Pcdicularis, 131 
Pennicetum, 170 
Penthorum, 85 
Pentstemon, 130 
Peplis, 32 
Periploca. 118 
Peritoma, 11 
Petalostemon, 45 
Peucedanum, 2 
Phaca, 45 
Phacelia, 141 
Phsethusa, 000 
Phalangium , see Scilla 
Ph alar is, 171 
Phaseolus, 45 
Philadelphus, 26 
Philoxerus, 87 
Phleum, 171 
Phlox, 123 
Phryma, 137 
Phyllactis, 112 
Phyllanthus, 55 
Physalis, 132 
Physostegia, 138 
Phytolacca, 91 
Pinguicula, 128 
Pinckneya, 115 
Piper, 95 
Pinus, 145 
Piptatherum, 171 
Pistia, 170 
Pisum, 45 
Planera, 47 
Plantago, 109 
Platananthera, 155 
Platanus, 52 
Plumbago, 110 
Pleea, 158 
Pleuraphis,171 
Pleuropogon, 171 
Poa, 171 
Plectritis, 112 
Podalyria, 45 
Podophyllum, 8 
Podostemum, 96 
Pogonia, 155 
Polanisia, 11 
Polemonium, 123 
Polycarpon, 87 
Polycnemum, 90 
Polygala, 73 
Polygonatum, see Convallaria 
Polygonum, 92 
Poly mnia, 113 
Poly podium, 174 
Polypogon, 171 
Polypremum, 120 
Polypteris, 113 
Polytcenia, 2 
Pontederia, 159 
Pomaria, 45 
Populus, 51 
Porcelia, see Asimina 
Portulacca, 83 
Potamogeton, 168 
Potentilla, 41 
Poterium, 40 
Pothos, see Symplocarpus 
Prenanthes, 113 
4 
Primula, 127 
Prinos, 99 ' 
Prismatocarpus,105 
Proserpinaca, 30 
Prosopis, 45 
Prunella, 138 
Prunus, 43 
Psilotum, 175 
Psoralea, 45 
Psychotria, 115 
Ptelea, 68 
Pteris, 174 
Pterocaulon, 113 
Pterospora, 104 
Pulmonaria, 139 
Purshia, 41 
Pycnanthemum, 138 
Pyrethrum, 113 
Pyrola, 104 
Pyrus, 42 
Pyxidanthera, 124 
Quercus, 49 
Q ueria, seeAnychia 
Ranunculus, 3 
Rhamnus, 59- 
Rhexia, 55 
Rhinanthus, 131 
Rhododendron, 102 
Rliodora, 102 
Rhus, 67 
Rhynchosia, 45 
Rhynchospora, 172 
Ribes, 27 
Ricinus, 55 
Rivina, 91 
Robinia, 45 
Rochelia , see Echinospermum 
Rosa, 41 
Rottbollia, 171 
Rubia, 114 
Rubus, 41 
Rudbeckia, 113 
Ruellia, 133 
Rumex, 92 
Ruppia, 168 
Sabal, 164 
Sabbatia, 120 
Saccharum, 171 
Sagittaria, 144 
Salicornia, 96 
Salix, 51 
Salsola, 91 
Salvia, 138 
Salvinia, 176 
Sambucus, 116 
Samolus, 127 
Sanguinaria, 4 
Sanguisorba, 40 
Sanicula, 2 
Santolina, 113 
Sapindus, 62 
Saponaria, 81 
Sarracenia, 78 
Sarot/ira, see Hyperi :r m 
Saururus, 94 
Saxifraga, 24 
Scheuchzeria, 169 
Schizandra, 18 
Schizsea, 074 
Schcenus, 172 
Schollera, 159 
Schrankia, 45 
Scirpus, 172 
Schwalbea, 130 
Schweinitzia, 104 
