352 



INDEX 



Pearlwort, Decumbent, 

 130 

 Procumbent, 129 

 Small-flowered, 130 

 Pellitory, Pennsylvania, 



no 

 Pencil-flower, 186 

 Penny-cress, Field, 149 

 Pennyroyal, American, 

 270 

 Bastard, 264 

 False, 264 

 Pennywort, 248 

 Pepper-grass, Apetalous, 

 149 

 Garden, 149 

 Narrow-leaved, 



'49 . , 

 Roadside, 148 

 Town, 149 

 Wild, 149 

 Peppermint, 273 

 Pepperidge, 235 



Sweet, 235 

 Perilla, 274 

 Periwinkle, 249 

 Persicaria, Carey's, 117 



Dock-leaved, 116 



Hartwright's, 116 



Pennsylvania, 116 



Slender Pink, 116 



Swamp, 116 



Water, u6 

 Persimmon, 245 

 Petunia, Violet, 277 



White, 277 

 Phacelia, Pursh's, 256 



Small-flowered, 256 

 Phlox Family, 256 

 Phlox, Crawling, 257 



Downy, 257 



Garden, 257 



Mountain, 257 

 Wild Blue, 257 

 Phyllanthtis, Carolina, 



197 

 Pickerel-weed, 76 

 Pickerel-weed Family, 76 

 Picris, Hawkweed, 302 

 Pigeon-berry, 123 

 Pigweed, 119 



Rough, 122 



Slender, 122 

 Pigmy-weed, 159 

 Pilot-weed, 329 

 Pimpernel, 231 



I^ong-stalked False, 

 281 



Red, 244 



Scarlet, 244 



Water, 243, 282 



Yellow, 231 

 Pine Family, i 



Jersey, 2 



Pitch, 2 



Red, 2 



Table Mountain, -z 



White, 2 



Pine Yellow, 2 

 Pine-drops, 372 

 Pine-sap, 237 

 Pine-weed, 213 

 Pink, Bunch, 127 



Deptford, 127 



Fire, 126 



Ground, 257 



Moss, 257 



Mullein, 126 



Proliferous, 127 



Slender Marsh, 247 



Swamp, 2^8 



Wild, 126 

 Pink Family, 125 

 Pinkster-flower, 238 

 Pin-weed, Beach, 214 

 Hairy, 214 

 I,arge, 214 

 Ivarge-podded, 



215 

 Leggetts, 214 

 Oblong-fruited, ^ 



214 

 Thyme-leaved, 

 214 

 Pipewort, 75 



Seven-angled, 75 



Ten-angled, 75 

 Pipewort Family, 75 

 Pipsissewa, 236 

 Pitcher-plant, 157 

 Pitcher-plant Family, 157 

 Plane-tree, 163 

 Plane-tree Family, 163 

 Plantain, Common, 288 



Dwarf, 289 



Heart-leaved, 289 



Large-bracted, 289 



Many-seeded, 289 



Mud, 76 



Rugel's, 288 



Sand, 289 



Slender, 289 



White Dwarf, 289 

 Plantain Family, 288 

 Pleurisy-root, 251 

 Plum Family, 177 



Porter's, 178 



Wild Red, 178 



Wild Yellow, 178 

 Plume-grass, Contracted, 



15 

 Pogonia, Nodding, 96 

 Rose, g6 



Smaller Whorled, 96 

 Whorled, 96 

 Poke weed Family, 123 

 Poke, 123 



Indian, 81 

 Poison Ivy, 203 

 Poison Oak, 203 

 Poison Sumac, 203 

 Polypremum, 246 

 Pond Lily, 132 



Large Yellow,i32 

 Red-disked, 132 

 Small Yellow, 132 



Pondweed, Alga-like, 8 



Blunt-leaved, 8 



Clasping-leaved, 7 



Common Floating, 6 



Curled-leaved, 8 



Eel-grass, 8 



Fennel-leaved, 8 



Large-leaved, 7 



Leafy, 8 



Long-leaved, 7 



Northern, 7 



Nuttall's, 7 



Oakes', 7 



Rafinesque's, 8 



Robbin's, 8 



Shining, 7 



Small, 8 



Spiral, 8 



Spotted, 7 



Various-leaved, 7 



Ziz's, 7 

 Pondweed Family, 5 

 Poplar, Downy, 99 



Lombardy, 99 



Silver-leaf, 98 



Swamp, 99 



White, 98 

 Poppy, Celandine, 145 



Corn, 144 



Field, 144 



Garden, 144 



Long, Rough-fruited, 

 144 



Long, Smooth- 

 fruited, 144 



Mexican, 145 



Ojjium, 144 



Prickly, 145 



Red, 144 



Sea, 145 



Yellow, 145 



Yellow Horned, 145 

 Poppy Family, 144 

 Portulaca, Garden, 124 

 Potato Family, 274 

 Potato Vine, Wild, 254 

 Prickly Ash, 195 

 Prickly Pear, Eastern, 



219 

 Prim, 246 



Primrose Family, 243 

 Prince's Feather, 117 

 Prince's Pine, 236 

 Privet, 246 

 Puccoon, Hairy, 260 



Hoary, 260 

 Purslane, 124 



Marsh, 221 

 Purslane Family, 124 

 Pussley, 124 

 Putty-root, 97 



Quaking-grass, Lesser, 34 

 Queen-of-the-Prairie, 171 

 Quercitron, 107 

 Quitch-grass, 40 



Radish, Garden, 152 



