Ch. IX.] LEAVES. 55 



213. Pinnate ; at Fig. 35, a, represents the petiole or -prin- 

 cipal leaf stalk; from this, spring out other divisions, each bear- 

 ing a lea/el; 6, 6, represent the stipules or appendages; the 

 whole taken together forms one compound pinnate leaf. Tiie 

 term pinnate is from the Latin pinna, a wing or pinion. 



2J4. Binate; when two leafets only spring from the periele, 

 as in Fig. 35, c. 



Fig. 36. 



215. Ternate ; when three leafets arise from the petiole, j\s 

 Fig. 36, a. 



216. Bi-ternate is a second division of threes, as Fig. 36, b. 

 U7. Tri-ternate is a third 'division of threes, as Fig. 36, c. 



Fig. 37 



218. Decompound, is when a pinnate leaf is again dindrd. 

 cr has its leaves twice compound, as Fig. 37, a. At 6, is a re- 

 presentation of thrice compound leaves. 



219. Leaves vary in size, from the small leaves of some ol 



213. What does pinnate signify 1 



214. What is binate I 



215. When is a leaf said io be ternatel 

 2 lt>. When bi-ternate 1 



217. When tri-ternatel 



218. When is a leaf said to be decompound? 



2li). What is remarked of leaves with ^aspect to sizel 



