No. 14.] 



FLOWERING PLANTS AND FERNS. 



539 



Potamogcton 



Spirillus 44 

 Vaseyi 43 

 zosterifolius 43 

 Potato 344 

 Potato-vine 

 Wild 324 

 Potentilla 232, 441 

 Anserina 234 

 argentea 233 

 arguta 232 

 canadensis 234 



var. simplex 234 

 fruticosa 233 

 intermedia 233 

 monspeliensis 232 



var. norvegica 232 

 norvegica 232 

 pacifica 234 

 palustris 233 

 pumila 234 

 recta 233 

 simplex 234 

 sulphur ea 233 

 tridentata 233 

 Poterium 



canadense 241 

 Sanguisorba 241 

 Pot-herb Mustard 203 

 Poverty Grass 283 

 Powder-horn 177 

 Prairie Rose 242 



Willow 140 

 Prenanthes 413 

 alba 413 

 altissima 413 



var. hispidula 413 

 serpentaria 4^3 

 trifoliolata 4^3 

 Pretty Nancy 179 

 Prickly Ash 262 

 Cleome 212 

 Clotbur 391 

 Gooseberry 217 

 Lettuce 411 

 Pear 289 

 Poppy 197 



Prickly 



Saltwort 169 

 Pride of the Meadow 235 

 Prim 319 

 Primrose 

 Common Evening 292 

 Evening 292 

 Primrose Family 3^5 

 Primrose-leaved Violet 287 

 Primulaceae 315, 438, 440 

 Prince's Feather 162, 169, 170 



Pine 306 

 Privet 319 



Proboscis Flower 360 

 Proserpinaca 295 



palustris 295 

 Prostrate Amaranth 170 

 Provence Rose 243 

 Prunella 335 



vulgaris 335 

 Prunus 243, 441 

 alleghaniensis 244 

 americana 246 

 avium 245 

 Cerasus 245 

 cuneata 245 

 domestica 246 

 Gravesii 245 

 instititia 244 

 Mahaleb 245 

 maritima 244 

 nigra 246 

 pennsylvanica 244 

 Persica 246 

 pumila 245 

 serotina 243 

 spinosa 



var. instititia 244 

 virginiana 244 

 Psamma 65 

 Psedera 276 



quinque folia 276 



var. hirsuta 276 

 vitacea 276 

 Ptelea 263 

 trifoliata 263 



