240 



LEAVES 



Fig. 222. — End view of a twig, showing the leaves alternately arranged 

 and so located in reference to each other that all receive light. 



i^4'~ 



Fig. 224.— Sweethearts {Galium 

 Fig. 223. — A. Wild Sunflower Aparine), one of the weeds having 

 with opposite arrangement of leaves in whorls. After Beal 

 leaves. After Bailey. Mich. Agr. Exp. Sta. 



