No. 14.] 



FLOWERING PLANTS AND FERNS. 



539 



Potamogeton 



Spirillus 44 



Vaseyi 43 



zosterifolius 43 

 Potato 344 

 Potato-vine 



Wild 324 

 Poteiitilla 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 



sulpliurea 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 413 



trifoliolata 413 

 Pretty Nancy 179 

 Prickly Ash 262 



Cleome 212 



Qotbur 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 315 

 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 2/^4 



Mahaleb 245 



maritima 244 



nigra 246 



pennsylvanica 244 



Persica 246 



pumila 245 



serotina 243 



spinosa 

 var. instititia 244 



virginiana 244 

 Psamma 65 

 Psedera 276 



quinquefolia 276 

 var. hirsuta 276 



vitacea 276 

 Ptelea 263 



trifoliata 263 



