LECT. ix.] APEXES OF LEAVES. 493 



thick, blunt apex : Hooked (uncinata), 1 3, when 

 it is curved so as to resemble, in some degree, a 

 hook : Lenticular (lenticularis) , when it is flat, 

 roundish, and convex on both surfaces, and a 

 transverse section of the leaf has the appearance 

 represented at 14, in the cut. 



c. The apex of a leaf, as has already been de- 

 scribed, is that part which is opposed to the 

 base or the footstalk ; or to the point of attach- 

 ment when it has no footstalk. It differs very 

 considerably in shape in different leaves. The 

 apex is termed acute (acutus), 15, when the 

 conjunction of the two lines of the edges forms an 

 acute angle : acutiusculus, 1 6, when there is a 

 slighter degree of this kind of termination : acu- 

 minate ( acuminatus) , 17, when it is long and very 

 tapering : spine-pointed (cuspidatus), 1 8, when it 

 runs out gradually into a small, awl-shaped, rigid 

 spine; and mucronate (mucronatus) , ]Q, when 

 it is rounded with an herbaceous spine standing 

 on it. The apex is awned (aristatus) ,* , when it is 



