118 



The Leaf 



although they are both netted there is one great differ- 

 ence between them. In the first case there is one 

 obvious principal vein or mid-rib from which smaller 

 veins branch (Fig. 59). In the second there are several 

 veins of equal size all springing from the place where 



Fig. 60. Leaf of Red Currant, showing palmate venation. 



the leaf blade joins the stalk (Fig. 60). These veins 

 have been compared to the fingers on a hand and have 

 caused the name of palmate venation to be given to 

 this type. The lime shows an example of the more 

 common pinnate venation (so called from a Latin word 

 pinna, meaning a feather). All our native trees show 



