252 INDEX OF ENGLISH NAMES. 



Poplar , Athenian. Populus graeca. 



Poplar, lalsam. Populus balsamifera. 



Poplar, Canadian. Populus canadensis. 



Poplar, cottonwood. Populus angulata. 



Poplar, gray. Populus canescens. 



Poplar, large American aspen. Populus grandi- 



dentata. 



Poplar, Lombardy. Populus dilatata. 

 Poplar, Ontario. Populus candicans. 

 Ptelea. Ptelea trifoliata. 

 Pyrus, snow-leaved. Pyrus nivalis. 

 Rowan. Pyrus aucuparia. 

 Sassafras. Lauras sassafras. 

 Service-tree, wild. Pyrus torminalis. 

 Shad flower. Amelanchier botryapium. 

 Snowdrop tree. Halesia tetraptera. 

 Sophora, Japan. Sophora japonica. 

 Sophora, weeping. Sophora japonica pendula. 

 Sorb-us or service tree. Pyrus domestica. 

 Sorrel tree. Andromeda arborea. 

 Sour gum. Myssa multiflora. 

 Spindle tree, broad-leaved. Euonymus latifolius. 

 Spindle tree, dark purple. E. atro-purpureus. 

 Spindle tree, European. E. europceus. 

 Spruce, Hack. Abies n*igra. 

 Spruce, Douglass s. Abies Douglassii. 

 Spruce, hemlock. Abies canadensis. 

 Spruce, morinda. Abies Smithiana. 



