U) 



Fig. 40 / \ 



Fig. 41 



Fig. 43 



Fig. 42 



Fig. 40. White Willow. [S. alba, L.] 

 ig. 4 i._Yellow Willow. [S. a., vitelline, S. and B.] 

 a. Young leaf. b. Mature leaf. 



Fig. 42. Weeping Willow. [S. Babyldnica, Tourn.] 

 Fig. 43. Crack Willow. [S. fragilis, L.] 



NATURAL SIZE. 



