COMPOUND LEAVES. 



29 



ply finnate^ having several leaflets 

 arrano^ed alons: both sides of the com- 

 mon stalk. This common stalk, an- 

 swering to the mid vein of a simple 

 leaf, is called the rachis. 



37. Among pinnate leaves, there 

 are, at least, three important distinc- 

 tions. Observe the Figs. 59, 60, and 

 61. One of them ends with an odd 

 leaflet, and is called odd-jpinnate. 

 Another ends with a pair of leaflets, 

 and is equally pinnate. Another still 

 has its alternate leaflets smaller, and is interruptedly pinnate. 



Fig. 58. Leaf of the Kose. 



Fig. 59. Odd-piunate \eaf {Tephrosia). Fig. 61. Literruptedly pinnate (Agrimony^ 

 Fig. 60. Equally pinnate leaf (Cassi'a). Fig. 62. Pinnately ternate {Desmodivm). 

 Fig. 63. Palmately ternate (Clover). 



36. Define tlie pinnate leaf. What is the rachis ? 



37. Give the distinction between odd-pinnate and equally pinnate. What 

 leaf is interruptedly pinnate ? 



