THE LEAVES. 



11 



the stem passed through the middle of the lamina. These are called 

 "perfoliate." (Fig. 9.) The leaves of thistles and some other plants 



Fig. 10. 

 have their margins continued down the stalk, giving it a bordered 

 appearance. In this case they are called " decurrent," literally 

 "running down." (Fig. 10.) 



