302 



INDEX. 



PAGE. 



(Enothera 83 



OLEACE^E 181 



Oleaster Family 194 



Olive Family 181 



ONAGRACE JE 81 



Onion 243 



Onoclea 264 



Onopordon 110 



Onosmodium 170 



OPHIOGLOSSACE.E 259 



Ophioglossum 267 



Opuntia 86 



Orache 186 



Orange-root 9 



ORCHID ACE IE 226 



Orchis 229 



Orchis Family 226 



OROBANCHACEJE 150 



Orpine 78 



Orpine Family 78 



Orthocarpus 157 



Osmorrhiza 91 



OSMUNDACEJE 259 



Osmunda 265 



Ostrich Fern 264 



Ostrya 207 



Oswego Tea 164 



OXALIDACEJE 42 



Oxalis 42 



Ox-Eye 130 



Ox-eye Daisy 126 



Oxytropis 56 



Painted-Cup 157 



Papaver 14 



PAP AVERAGES 14 



Papaw 10 



Parietaria 201 



Parnassia 76 



Paronychia 183 



Parsley Family 87 



Parsnip 89 



Partridge- berry 100 



Pasque-Flower 3 



Pastinaca 89 



Pasture Sage-brush 113 



PAGE. 



Pear 73 



Pearl-wort 36 



Pedicularis 158 



Pellsea 260 



Pellitory 201 



Peltandra 218 



Pennycress 24 



Pennyroyal 164 



Penthorum 78 



Pentstemon 155 



Pepper Family 182 



Pepperidge 94 



Peppergrass 24 



Peppermint 163 



Pepper-root 19 



Petalostemon 58 



Petasites 121 



Peucedanum 89 



PHANEROGAMS 1 



Phegopteris 261 



Phlox 172 



Phryma 159 



Physalis 175 



Physostegia 166 



Phytolacca 183 



PHYTOLACCACEJE 183 



Picea 215 



Pickerel-weed 247 



Pickerel-weed Family 247 



Pignut 203 



Pigweed 185 



Pilea 201 



Pimpernel 138 



Pine 215 



Pine-drops 144 



Pine Family 214 



Pine-sap 144 



Pinguicula 15') 



Pink Family 32 



Pinus 215 



Pinweed 29 



PIPERACE^E 182 



Pipewort 247 



Pipewort Family 247 



Pipsissewa , 144 



