LEAF-FORMS AND FIGURES. 



Fig. 37. Compound leaf of Red Clover. 



Fig. 38. Simple leaf of Willow (Saliz lucida). 



Fig. 39. Compound leaf of Rose. 



ules, like a simple leaf. This Clover leaf is also compound 

 (Fig. 37), having stipules (s), as well as this simple leaf of 

 the Shining Willow (Fig. 38). 



2-i. But here is a leaf, the Celandine (Fig. 40), which is 

 almost, but not quite, compound. The blade is feather- 

 veined, and deeply divided into several parts, called segments. 

 Such a leaf is called pinnatifid. In Fig. 31, the leaf of a 

 garden weed (Ambrosia), you observe that the segments are 

 themselves pinnatifid, so that the leaf is twice or l)i-pinnatifid. 



34. Please define the pinnatifid leaf. The bi pinnatifid. 



