COMPOUND LEAVES. 



29 



ply pinnate^ liaving several leaflets 

 arranged along both sides of the com- 

 mon stalk. This common stalk, an- 

 swering to the midvein of a simple 

 leaf, is called the r acids. 



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-joinnate. 

 Another ends with a pair of leaflets, 

 and is equally pinnate. Another still 

 has its alternate leaflets smaller, and is interruptedly pinnate. 



Fig. 5S. Lciif ofthe Rose. 



Fig. 50. Odd-pinnate \iii.\^ {Tephrosia). Fig. 61. Interruptedly pinnate (Agrimony). 

 Fig. GO, Equally pinnate \Qa^ {Cassia). Fig. 62. Pinnately ternate {Desmodium). 

 Fig. 63. Paliiiately ternate (Clover). 



3G. Define tlie pinnate leaf. What is the rachis ? 



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

 leaf is interruptedly pinnate 'i 



