﻿Trees of New 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.) 



ilNAT£ OBTVSE THUNCATC 



18 19 20 



Leaf Apexes 



CMAf^GinAre MucfiionArt cuiPioATC 

 21 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.) 



CUNEATE OBTUSE 



25 26 



Leaf Bases 



