222 



THE STUDY OF LEAVES. 



Fig. 90. Branch of Barberry, show- 

 ing transition of Foliage Leaves 

 into Spines. 



PETIOLE 

 TENDRIL* 



SUPPORT 



Fig. 91. Leaf stalk of Woody Night- 

 shade modified for support. 



FLOWER' 



, -'STIPULE 



LEGUME--A 



PRICKLE LEAFY ^ 



STIPULE ^ \\\ B 



STEM-'' 



Fig. 92. A, Compound Leaf of Rose, with five Leaflets and Stipules ; 

 B, Compound Leaf of Pea, with terminal Leaflets modified into Tendrils. 



