VEINS OF THE LEAF. 



11 



LESSON II. 



VEINS AND VENATION OP THE LEAF. 



6. The blade of the Quince leaf (Fig. 2) shows many veins 

 running through, it, and branching aU over it. Examine 



blade. 



Fig. 2. Leaf of tho Quince, showing the veins. 



them. First, the petiole seems to be extended and continued 

 right through, from the base to the apex, forming the largest 

 vein in the leaf. This is the midvein. 



7. Next observe several large branches sent off from this 

 midvein on both sides, right and left. These are the vehilets. 

 Now, looking at these veins, their arrangement reminds us of 

 a feather,- and we call such \e&Yes feather-veined. Therefore, 



Violet? Do all kinds of leaves have petioles? — of Phlox, for example? 

 What do you understand by sesdU leaves ? 



%,. Describe the midvein of the Quince leaf. 



7. Describe the veinlets. What is the feather-veined venation ? 



