22 3 



PAGE 



Orache ! 39 



Oreocarya j86 



Oregon Woodsia 103 



Orchids x^o 



OROBANCHACE^E 194 



Orobanche 194 



Orophaca 163 



Orpine Family 152 



Orthocarpus ! 93 



Oryzopsis m 



Osmorrhiza 178 



Ostrich-fern 103 



Ostrya I33 



OXAUDACE^ 166 



Oxalis ' !66 



Ox Eye 208 



Oxygraphis 146 



Oxytropis 163 



Pachylophus. 175 



Painted Cup 193 



Panicularia 117 



Panicum 109 



PAPAVERACE^E 147 



PAPIUJONACE^ 158 



Parietaria 135 



Parnassia 152 



Paronichia 143 



Parosela 161 



Parsley 177 



Parsnip 178 



Parthenocissus 170 



Pasque Flower 145 



Pastinaca 177 



Pea Family 158 



Pedicularis 193 



Pellaea 104 



Pellitory 135 



Pennyroyal 189 



Penthorum 152 



Pentstemon 191 



Pepper-grass - 148 



Peramium 131 



Persicaria 136 



Petalostemon 161 



Petasites 211 



Peucedauum 177 



Phaca 163 



PAGE 



Phalaris no 



Phegoptoris 103 



Philotria 108 



Phleum 112 



Phlox 185 



Phlox Family 185 



Phragmites 115 



Phryma 194 



PHRYMACE^; 194 



Physalis 190 



Physaria 150 



Physostegia 189 



Picea 105 



Pickerel-weed 126 



Picradenia 210 



Pigeon grass no 



Pigweed 138 



Pilea 135 



PINACE^. Pinus 105 



Pine Drops 180 



Pinks 141 



PLANTAGINACE^ 194 



Plantago 194 



Plantain Family 194 



Pleurisy Root 183 



Plum Family 157 



Poa 116 



Poison Ivy 169 



Poison Oak 169 



Polanisia 152 



Poi,EMONiACE^ 185 



Polygala 167 



POLYGALACH^ 167 



POLYGONACE^ 135 



Polygonatum 1 29 



Polygomum ." 136 



POIvYPODIACE^ 103 



Polypodium 104 



Polypody 104 



POMACE^ 156 



Pond Lily 143 



Pond Weed 106 



Poplar 132 



Poppy Family 14? 



Populus 132 



Porcupine Grass in 



Portulaca. 141 



