252 INDEX OF ENGLISH NAMES. 



Poplar , Athenian. Populus grseca. 



Poplar, balsam. 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. 

 Sorbus 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. europseus. 

 Spruce, black. Abies tfigra. 

 Spruce, Douglass's. Abies Douglassii. 

 Spruce, hemlock. Abies canadensis. 

 Spruce, morinda. Abies Smithiana. 



