20 OUTLINE OF STRUCTURAL BOTANY 
When the point ends with an acute angle long drawn out, it is 
CRIS ASE)! Soe OS a oe ACP 
If the angle is sharp but not long and tapering it is (Fig. 87) Acute 
But if the point is rounded it is) (Wig)738) 5... 93. = Obie 
If terminated by a nearly straight edge, as though cut off, it is 
CRIg. (89) 6 5 eh at Se Re eee ncn te eer eC etre ae 
A leaf notched at the apex is (Fig. 40) ee Emarginate 
If terminated by a hard bristly point it is (Fig. 41) . Mucronate 
41 
The leaf margins are also important in differentiation. The 
margin is said to be: 
When it is divided into sharp teeth like those of a saw (Fig. 19) 
. Serrate 
