N Nightshade, Smaller Enchanter’s, 197 Western Enchanter’s, 198 O Oleaster Family, 191 ONAGRACEÆ, 193 Onion, 42 OPHIOGLOSSACEÆ, 1 Ophrys, 54 borealis, 61 convallarioides, 60 nephrophylla, 60 ORCHIDACEÆ, 53 Orchid, Family 53 Fragrant Bog, 66 Long-bracted, 63 Purplish-green Bog, 64 Round-leaved, 58 Small Green Bog, 65 Small Northern Bog, 59 Small White Bog, 66 Orchis, 54 rotundifolia, 58 Orthocarpus, 248 luteus, 259 Yellow, 259 Oxycoccus, 221 Oxycoccus, 225 Oxyria, 76 digyna, 76 Oxytrope, Drooping-fruited, 176 Inflated, 177 Mountain, 173 Showy, 175 Sticky, 175 P Pachystima myrsinites, 184 Paint-brush, White Indian, 257 Painted Cup, Bright, 258 Scarlet, 258 Painter’s Brush, 256 PAPAVERACEÆ, 110 PAPILIONACEÆ, 168 Parnassia, fimbriata, 126 Kotzebuei, 128 montanensis, 127 parviflora, 127 PARNASSIACEÆ, 126 Parsley, Cut-leaved, 202 Large-seeded, 201 Narrow-leaved, 202 Wild, 203 Parsnip, Cow, 204 Pasque-Flower, 94 Pea Family, 168 Pearl-wort, Arctic, 87 Pectiantia, 129 Breweri, 134 pentandra, 133 Pedicularis, 248 bracteosa, 261 racemosa, 260 Pentstemon, 248 confertus, 250 fruticosus, 249 procerus, 251 pseudohumilis, 251 Peramium, 54 Menziesii, 62 repens, 63 Petasites, 285 frigida, 314 palmata, 312 sagittata, 313 Phaca, 168 americana, 172 Phacelia, 238 heterophylla, 239 sericea, 239 Mountain, 239 Phegopteris, 3 alpestris, 4 Dryopteris, 5 Phegopteris, 5 Phyllodoce, 212 empetriformis, 217 glanduliflora, 216 intermedia, 216 Physaria, 112 didymocarpa, 117 Picea, 24 albertiana, 31 Engelmanni, 31 PINACEÆ, 23 Pine, Black, 25 Family, 23 Jack, 25 Prince’s, 211 Running, 19 White-bark, 24 Pinguicula vulgaris, 262 Pink Family, 81 Pinus, 24 albicaulis, 24 Murrayana, 25 Pipsissawa, 211 Plantain, Rattlesnake, 62 Northern Rattlesnake, 63 Plum Family, 167 POLYGONACEÆ, 75 Polygonum, 76 viviparum, 78 POLYPODIACEÆ, 3 Polystichum, 4 Lonchitis, 10 POMACEÆ, 165 Poplar, Balsam, 68 Poppy Family, 110 Populus balsamifera, 68 tremuloides, 69 PORTULACACEÆ, 80 Potentilla, 151 dissecta, 160 multisecta, 161 nivea, 160 uniflora, 161 Primrose Bird’s-eye, 226 Evening, Family, 193 Family, 226 Maccalla’s 227 Primula, 226 americana, 226 Maccalliana, 227 PRIMULACEÆ, 226 Prince’s Pine, 211 Prunella, 244 vulgaris, 245