INDEX. 



303 



PAGE. 



Pitcher-Plant Family 13 



Plane-tree 201 



Plane-tree Family 201 



PLANTAGIN ACE^E 148 



Plantago 148 



Plantain. . : . 148 



Plantain Family 148 



PLATAN ACE^: 201 



Platanus 201 



Pleurisy-root .'. 181 



Plum 64 



PLUMBAGINACE^ 144 



Plumeless Thistle 110 



Podophyllum 12 



Pogonia 233 



Poison Elder 44 



Poison Hemlock 92 



Poison Ivy 44 



Poison Oak 44 



Poke Milkweed 180 



Pokeweed 183 



Pokeweed Family 183 



Polanisia 25 



POLEMONIACE^E 172 



Polemonium Family 172 



Polygala 48 



POLYGALACE.E 48 



POLYGONACE.E 188 



Polygonatum 242 



Polygonum 189 



Polymnia 131 



POLYPETALOUSEXOGENS. 1 



POLYFODIACE.S 257 



Polypodium 259 



Polypody 259 



POMEvE 63 



Pondweed 221 



Pondweed Family 221 



Pontederia 247 



PONTEDERIACE^E 247 



Poplar 212 



Poppy 14 



Poppy Family 14 



Populus 212 



Portulaca . . .37 



PAGE. 



PORTULACACE^E 37 



Potamogeton 221 



Potentilla 67 



Poterium 65 



Prairie Clover 58 



Prairie Dock 131 



Prairie Rocket 21 



Prenanthes 133 



Prickly Ash 43 



Prickly Pear 86 



Primrose 146 



Primrose Family 145 



Primula 146 



PRIMULACE^E 145 



Prince's Pine 144 



Prosartes 241 



Proserpinaca 80 



Prunus 64 



P oralea 67 



Ptelea 43 



Pteris 260 



Pterospora 144 



Puccoon 170 



Pulse Family 49 



Purslane 37 



Purslane Family 37 



Putty Root 234 



Pycnanthemum 164 



Pyrola 143 



PYROLE^E 139 



Pyrus 73 



Quercitron 206 



Quercus 205 



Quillwort 271 



Radish 25 



Ragweed HI 



Ragwort 116 



RANUNCULACE^E 2 



Ranunculus 6 



Raphanus 25 



Raspberry 70 



Rattlesnake- Plantain 232 



Rattlesnake-root 138 



Rattlesnake-weed 132 



