60 



RETICULATE VENATION 



[OH. 



and the following Willows : 



Salix fragilis 

 8. cinerea 

 S. repens 

 S. amygdalina 



8. pentandra 

 S. Caprea 

 8. viminalis 

 8. nigricans 



8. purpurea 

 S. reticulata 

 S. alba 

 8. aurita. 



W 



m 



m 



vO 



Fig. 19. Leaf of Crack Willow, 

 Salix fragilis, showing pinnate- 

 reticulate venation (Ett). 



Fig. 20. Leaf of Barberry, 

 Berberis vulgaris, showing 

 reticulate venation (Ett). 



