INDEX. 



331 



Pasture thistle, 311 

 Paulownia, 259 

 Pea 



'Butterfly, 169 



Hoary, 164 



Milk, 169 

 Pea Family, 160 

 Pea-vine, 170 

 Peach, 157 



Common, 157 

 Peach-leaved dock, 105 

 Peanut, 



Hog, 169 

 Pear, 153 



Common, 153 



Prickly, 199 

 Pearlwort, 114 

 Pedicularis, 264 

 Pellitory, 102 

 Pencil-flower, 165 

 Penny-cress, 132 

 Pennyroyal, 252 



American, 252 



Bastard, 246 



False, 246 



Mock. 252 

 Pennywort, 208, 226 



Marsh, 20S 



Water, 208 

 Penthoraceae, 141 

 Penthorum, 142 

 Pentstemon, 259 

 Pepper-grass, 132 

 Peppermint, 256 

 Pepperidge, 206 

 Peramium, 88 

 Perfumed-cherry, 157 

 Perilla. 256 

 Periwinkle, 228 

 Persicaria, 106 

 Persimmon, 223 

 Perularia, 86 

 Petty-spurge, 180 

 Petunia, 240 

 Phacelia, 235 

 Phalaris, 20 

 Pharbitis, 233 

 Phaseohis, 169 

 Philadelphus, 144 

 Philotria. 8 

 Phleum, 24 

 Phlox, 236 



Blue, 236 

 Phlox Family, 236 

 Phoradendron, 269 

 Phyrma, 244 

 Phrymaceae, 244 

 Phyla, 244 

 Phyllanthus, 178 



Physalis, 238 

 Physalodes, 237 

 Phytolacca, 112 

 Phytolaccaceae, 112 

 Pickerel-weed, 69 

 Pickerel-weed Family, 



68 

 Pieris, 317 

 Pigeon-berry, 112 

 Pigeon-cherry, 157 

 Pigeon-grape, 187 

 Pigeon-grass, 18 

 Pig-nut, 95 

 Pigweed, 109, 111 

 Pimpernel, 211, 222 



False, 222, 260 



Water, 223 



PiNACEAE, 1 

 PiNALES, 1 



Pine, 1 



Jersey, 2 



Pitch, 2 



Scrub, 2 



Short-leaf, 2 



Spruce, 2 



Table-mountain, 2 



Yellow, 2 



White, 2 

 Pine Family, 1 

 Pine-needles, 172 

 Pine -sap, 215 

 Pineweed, 192 



PiNGUICULACEAE, 265 



Pink, 



Deptford, 116 



Ground, 237 



Moss, 237 



Eose, 225 



Wild, 118 

 Pinus, 1 

 Pin-oak, 99 

 Pinweed, 193 

 Pinxter-flower, 216 

 PiPERALES, 90 

 Pipsissewa, 215 

 Pitch-pine, 2 

 Pitcher-plant, 140 

 Plane-tree, 145 

 Plane-tree Family. 145 

 Plantaginaceae, 267 

 Plantaginales, 267 

 Plantago, 268 

 Plantain, 268 



Common, 269 



English, 268 



Poor-Kobin 's, 315 



Eobin's, 298 

 Plantain Family, 267 

 Platanaceae, 145 



Platanus, 145 



Pleurisy-root, 230 



Plum, 157 



Wild red, 158 

 Wild yellow, 158 



Plum Family, 156 



Plum-grape, 188 



Plumeless-thistle, 312 



Poa, 32 



POACEAE, 9 



Poales, 8 



Podophyllaceae, 127 

 Podophyllum, 127 

 Podostemaceae, 141 

 Podostemon, 141 

 Pogonia, 86 

 Poinsettia, 180 

 Poison-dogwood, 182 

 Poison-elder, 182 

 Poison-hemlock, 210 

 Poison-iv.y, 182 

 Poison-oak, 182 

 Poison-sumac, 182 

 Poke, 112 

 Poke-milkweed, 230 

 PoKEWEED Family, 112 

 Polanisia, 139 



POLEMONALES, 231 

 Polemonium, 237 

 Polycodium, 219 

 Polygala, 176 

 Fringed, 176 



POLYGALACEAE, 176 

 POLYGALALES, 176 

 POLYGONACEAE, 104 

 POLYGONALES, 104 



Polygonatum, 77 

 Polygonum, 105 

 Polymnia, 302 

 Polymniastrum, 302 

 Pondweed, 5 

 Pondweed Family, 4 

 Pontederia, 69 

 Pontederiaceae, 68 

 Poorman 's weather-glass, 



222 

 Poor-robin's plantain, 315 

 Poplar, 91 



Yellow, 126 

 Poppy, 128 



Corn, 129 



Field, 129 



Garden, 129 



Opium, 129 



Prickly, 129 



Smooth-fruited, 129 

 Poppy Family, 128 

 Populus, 91 

 Porteranthus, 146 



