a b c d 6 e 2 



fn Orbicular-ovate, 1-2 in., rounded to subcordate b., obtuse to acute or 

 apiculate a., glabrous and fragrant; fr. drupe. 



PERFUMED CHERRY (Prunus Mahaleb). 

 d 7 Margin crenate or erenulate; Ivs. 



e Lance-obovate, iy 2 -3 in., cuneate b., rounded, obtuse or notched a.; fr. drupe- 

 like SWAMP HOLLY (Ilex decidua) . 



e'i Oblong, 1-2 in., thick, evergreen; fr. a bright red drupe-like berry; fr. 



drupe-like YAUPON (Ilea> vomitoria) . 



es Suborbicular, iy 2 -3 in., rounded or obtuse b., abruptly acute or short acumi- 

 nate, finely crenate; petioles long and compressed laterally; fr. capsule. 



QUAKING ASP (Papulus tremuloides ) . 



e* Broad-deltoid or rhombic, blade commonly wider than long, cuneate to 

 truncate b., short acuminate or acute a.; petioles long, laterally com- 

 pressed; fr. capsule; branches 



f Spreading BLACK POPLAR (Populus nigra) . 



f2 Strictly upright LOMBARDY POPLAR (Populus dilatata) . 



d Margin dentate, 



e Finely dentate, mostly oblong, acute or obtuse b., acuminate a., with prominent 

 arcuate veins; fr. dry winged drupe. 



SILVER-BELL TREE ( Mohrodendron Carolinum ) . 

 e 2 Coarsely dentate, broad-ovate to orbiculer; petioles 



f Laterally compressed and long, blades rounded b., acute or short acuminate 

 a., glabrous and firm (white velvety when young) ; fr. capsule. 



LARGE-TOOTH POPLAR (Populus grandidentata) . 



