THE LEAF 



203 



(^) 



(T)a)(l) 



(d) As to their apex: acuminate (Peepul), acute (Mango), 

 obtuse (Casliew), retiise (Crotalaria retusa), mucronate (Csesalpinia) . 



(e) x\s,to their margin: 

 entire (Jack), detitate 

 (Clerodendron), serrate 

 (Rose), crenate (Hydroco- 

 tyle), sinuate (Momordica 

 charantia), angled (Liiffa). 



(/) If the incisions 

 are deep, but do not ex- 

 tend half-way to the mid- 

 rib we call them lobed 

 (Urena lobata), if they 

 go more than half-way : 

 pinnatifid, or palmatitid 

 (Jatropha multitida), and 

 when they go almost to 

 the mid-rib: pinnately or 

 palmately partite (Mani- 

 hot utilissima). 



{g) If the incisions 

 are so deep that the blade 

 is divided into several 

 distinct leaflets, we speak 

 of compound leaves in 

 contradistinction to simple 

 leaves. The pinnatifid leaf then becomes pinnate (Clitoria), and 



Fig. 185. — (a) Shape, (5) Apex, 

 (c) Bases of leaves. 



.•2§^ 



Fig. 186. — Margin of leaves : 1. Dentate (toothed); 2. serrate; 3. creuate: 

 4. sinuate; 5. pinnatifid; 6. bipinnatifid; 7. palmatitid. 



the palmatitid, palmate (Silk Cotton). If the pinnate leaf has a 

 terminal leaflet, it is oddly or impari-pinnate (Rose), if not, 



