12 



OBJECT LESSONS IN BOTANY. 



we may say that the feather- veined venation consists of 07ie 

 7nidvein hranching iiito vei7ilets. This is very common. 



8. Thirdly, the veinlets themselves send off little branches 

 (branchlets) on their right and left, and we call these the 

 veinulets. These again and again may divide, and finally, all 

 the little divisions unite again, forming a complete net-work 

 all over the leaf. Thus we learn what a net-veined leaf is. 



Fig. 3. The Willow leaf. Some of the veinulets are shown. 



9. Here is a picture of the Willow leaf (Fig. 3). You can 

 point out all its parts, and the three kinds of veins in it. In 



Fig. 4. Leaf of the Red-bud (Cercis). 



8. What are the veinulets ? When is a leaf said to be net Yeinod! 



