INDEX. 



441 



Nepeta, 297 



Nettle, 99 



Nettle Family, 99 



New Jersey Tea, 227 



Nicotiana, 304 



Nigger-head (Rudbeckia) 



Night-shade, 302 



Night-shade, Enchanter's, 248 



Night-shade Family, 300 



Nine-bark, 1 79 



Nodding Violet, 234 



Nolina, 83 



Nothocalais, 406 



Notholcena, 4 



Nut-grass, 38 



Nut Pines, 8 



Nymphaa, 147 



Nymph jEACE^, 147 



Oak, 97 



Oak, Poison, 225 



Oat-grass, 23, 34 



Oat-grass, Wild, 35 



Oats, 34 



Oats, False, 33 



Oats, Wild, 23 



Odosfemofij 148 



CEnothera, 244-247 



Oleace^, 264 



Oleales, 264 



Oleaster Family, 239 



Oligoneuron, 349 



Olive Family, 264 



Omphalodes, 286 



Onagra, 244 



One-flowered Wintergreen, 258 



Onion, 81 



Onion Family, 81 



Onobrychis, 216 



Onosmodium, 293 



Oonopsis, 344 



Ophioglossace^, I 



Ophioglossales, I 



Ophrys, 89 



Opulaster, 179 



Opuntia, 238 



Opuntiales, 234 



Orache, 116 



Orchard-grass, 40 



OschidacejE, 87 



Oechidales, 87 



Orchid Family, 87 



Orchid, Bog, 88 



Orchid, Long-bracted, 87 



Oregon Grapes, 148 



Oreobatus, 180 



Oreobroma, 126 



Oreocarya, 286 



Oreochrysum, 345 



Oreoxis, 252 



OrOBANCHACEjE, 319 

 Orobanche, 320 

 Orogenia, 254 

 Orophaca, 211 

 Orpine, 170 

 Orpine Family, 169 

 Orpine, Red, 170 

 Orthocarpus, 317 

 Oryze^, 22 

 Orysopsis, 25 

 Osmorrhiza, 251 

 Oxalidace.«, 220 

 Ox alls, 220 

 Ox-eye, 371 

 Ox-eye Daisy, 382 

 Oxybaphus, 124 

 Oxypolis, 254 

 Oxyria, 109 

 Oxytenia, 328 

 Oxytrope, 212 

 Oxytropis, 212 

 Oyster Plant, 403 

 Osomelis, 172 



Pachylophus, 245 

 Pachystima, 226 

 Painter's Brush, 314 

 Painted Cup, 314 

 Pandanales, 1 1 

 Panice.«, 20 

 Panic-grass, 21 

 Panicularia, 48 

 Panicunij 2 1 

 Papaver, 148 

 Papaverace^, 148 

 Papaveeales, 148 

 Papyrus, 58 

 Parietaria^ 99 

 Parnassia, 175 

 Parnassiace;e, 175 

 Paronychia, 121 

 Parosela, 214 

 Parsley-Fern, 3 

 Parsnip, 255 

 Parsnip, Meadow, 252 

 Parthenice, 371 

 Parthenocissus, 228 

 Pasque Flower, 140 

 Pastinaca, 255 

 Pea, Marsh, 217 

 Pea, Turkey, 254 

 Pea Family, 194 

 Pearly Everlasting, 370 

 Pearl-wort, 130 

 Pectiantia, 171 

 Pedis, 382 

 Pedicularis, 318 

 Pellcea, 3, 4 

 Pellitory, 99 

 Penny-grass, 152 



