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 
OOM 
Lanceolate. Ovate. Heart-shaped. Halberd-shaped. Linear. Elliptical. 
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- 
IL LEAF TIPS 
Acuminate. Acute. Obtuse. Emarginate. Mucronate. 
acters which are found in all forms, and the student will have 
little difficulty in selecting and recognizing typical leaves. 
— xi — 
