284 



INDEX. 



Neckera 



Nemalion 



Nemopanthes 



Nepeta 



Nephroma 



Nettle 



Hedge 



Hemp 

 Nicandra 

 Nightshade 



Enchanter's 

 NiteUa 

 Nuphar 

 Nymphaea 7' 



Oak 



Oakesia 



(Enothera 



Omphalaria 



Oncophorus 



Onoclea 



Opegrapha 



Opliioglossum 



Orache 



Orchis 



Purple-fringed 

 Orpine 



Orthotrichum 

 Oryzopsis 

 Oscillatoria 

 Osmunda 

 Oxalis 



Pallavicinia 



Panicularia 



Panicum 



Pannaria 



Pansy 



Parietaria 



Parmelia 



Parsley, Hemlock 



Parsnip 



Cow 



Water 

 Partridge Berry 

 Pastinaca 

 Pea, Beach 



Everlasting 



Field 



Marsh 

 Peanut, Hog 

 Pearlwort 

 Pear, Sugar 

 Pedicularis 

 Pellia 

 Pellitory 

 Peltigera 



Pennyroyal, American 

 Pennywort, Water 

 Pepperbush, Sweet 

 Peppergrass 

 Pepper, Water 

 Pertusaria 

 Petasites 

 Petrocelis 

 Peyssonnelia 

 Phegopteris 

 Plulonotis 

 Phleum 

 Phormidium 

 Phyllitis 

 I Physcia 



212 



233 



89 



137 



258 



Picea 



Pickerel-weed 



Pigweed 



Amaranth 

 Pilophorus 



143 Pimpernel, False 



138 

 138 

 131 

 131 

 103 

 227 

 77 

 ,277 



144 



156 

 103 

 260 

 200 

 186 

 270 

 188 

 140 

 280 

 153 

 100 

 206 

 176 

 248 

 187 



225 



180 



174 



260 



81 



143 



254 



104 



104 



104 



105 



108 



104 



93 



93 



93 



93 



93 



84 



99 



134 



Pine 



Ground 



Piuesap 



Pine Weed 



Pink 



Swamp 



Pinus 



Pinweed 



Pipe, Indian 



Pipewort 



Pipsissewa 



Pitcher-plant 



Placodiiun 



Plagiochila 



Plautago 



Plantain 



Rattlesnake 



Platygyrium 



Plumaria 



Poa 



Pogonatum 



Pogonia 



Pohiia 



Polj'cystis 



Polygala 



Polygonatum 



Polygonum 



Polyides 



Polypodium 



Polypody 



Polysiphonia 



Polytrichum 



Pond-lily, Yellow 



Pondweed 



Pontederia 



Poplar 



Populus 



Porella 



Porphyra 



Portulaca 



Potamogeton 



Potentilla 



Prenanthes 



Primrose, Evening 



Prince's Pine 



Proserpinaca 



Protococcus 



Prunus 



Pteris 

 225 I Ptilidium 

 143 j Ptilota 

 259 I Puccinellia 

 137 I Punctaria 

 105 I Purslane 

 127 Water 



80 Pursley 

 142 Pylaiella 

 264 Pylaisia 



119 

 229 

 229 

 185 

 207 

 177 

 248 

 239 

 256 



Pyrenula 

 Pyrola 



One-flowered 

 Pyrus 

 Pyxine 



Quaker Ladies 



Quercus 



Quillwort 



149 

 157 

 140 

 137 

 265 

 132 

 149 

 188 

 128 



87 



82 



152 



149, 279 



80 

 128 

 162 

 127 



77 

 261 

 223 

 138, 279 

 138 

 152 

 212 

 230 

 179, 280 

 209 

 152 

 207 

 249 



90 

 155 

 141, 279 

 229 

 184 

 184 

 231 

 210 



77 

 161 

 157 

 147 

 147 

 220 

 234 



85 

 161 



96 

 122, 278 

 103 

 127 

 101 

 241 



93 

 184 

 220 

 230 

 181, 280 

 239 



85 

 102 



85 

 241 

 212 

 274 

 127 

 127 



98 

 257 



108 



144, 279 



189 



