take on new color and begin a new period of growth. It is the 

 leaves which the beginner finds most interesting and in which 

 he finds a ready means of identification. It must be remembered', 

 however, that leaves vary greatly in size and shape and general 

 appearance. How large are the leaves on a flourishing sprout 

 and how small on a stunted tree of the same species growing 



I. LEAF OUTLINES 



Lanceolate. Ovate. 



Heart-shaped. Halberd-shaped. Linear. Elliptical. 



st? 



Oblong. 



Oval. 



Orbicular. Oblanceolate. Spatulate. Obovate. 



near by, but under adverse circumstances. How different are the 

 leaves of the big white oak standing in the yard; they are hardly 

 lobed on the lowermost branches, while higher up they are deeply 

 cut. Yet, in spite of the many modifications that leaves undergo, 

 the leaves of any one species have certain rather constant char- 



LEAF TIPS 



Acute. 



Obtuse. 



Emarginate. Mucronate. 



acters which are found in all forms, and the student will have 

 little difficulty in selecting and recognizing typical leaves. 

 xn 



