Trees of Neiv York State 



31 



Leaf Classification — Continued 

 D. Leaves Classified as to Apex 



1. Acute, shaped like an acute angle but not attenuated. 



(Fig. 17.) 



2. Acuminate, shaped like an acute angle and attenu- 



ated. (Fig. 18.) 



3. Obtuse, blunt or rounded at the end. (Fig. 19.) 



'\cur£: 

 17 



18 19 20 



Leaf Apexes 



£M4noinflTe M(/cfiio/vAti cusPioArd 

 2 1 22 23 



4. Truncate, abruptly terminated as though cut off 



transversely. (Fig. 20.) 



5. Emarginate, with a shallow notch. (Fig. 21.) 



6. Obcordate, heart-shaped at the apex. 



7. Mucronate, tipped with a mucro ; abruptly tipped 



with a point. (Fig. 22.) 



8. Cuspidate, tipped with a sharp, rigid point. (Fig. 



23.) 

 E. Leaves Classified as to Base 



1. Acute, shaped like an acute angle, but not attenuated. 



(Fig. 24.) 



2. Cuneate, shaped like a wedge ; broad above and 



tapering evenly to an acute base. (Fig. 25.) 



3. Obtuse, blunt or rounded. (Fig. 26.) 



4. Cordate, rounded and with broad rounded sinus. 



(Fig. 27.) 



