KINDS AND FORMS OF LEAVES. 



5« 



151. Leaves without Distinction of Footstalit and Blade, or with no very obvious 



distinction of parts. Of this kind, among several others, may be mentioned, • — 



Needle - shaped 

 leaves, such as 

 those of Pine-trees 

 and Larches (Fig. 

 134). These are 

 long, slender, and 

 rigid, and often with 

 little if any distinc- 

 tion of sides. 



Awl-shaped or 

 Subulate leaves are 

 those which from a 

 broadish base ta- 

 per into a sharp 

 and rigid point, like 



Ternalely decompound, or four limescnmpound leaf. 



one sort of those of the Ked Cedar and Arbor Vitas (Fig. 135, 

 those on the larger branchlets). Those on other branchlets, as 

 at a, are shorter, blunt, and scale-shaped. 



Thread-sha'ped or Filiform 

 leaves ; round and stalk-like, as 

 those of the Onion. 



Equitant leaves, like those of 

 Iris (Fig. 64), which are folded 

 together lengthwise, as may be 

 seen at the base, where they 

 override each other. They grow 

 upright, with their faces looking 

 horizontally, instead of having an upper and a lower surface, as most leaves do. 



NeecJle-atiEipeJ leaves of Larch. 



wl-shaped leaves, Ac 



