BIED CHEKRY. 285 



when the whole series of veins and veinlets deepen 

 into a rich red colour, whilst the tissue, which 

 they traverse, turns a deep yellow. Very fre- 

 quently a fine russet hue will overspread the 

 waning Cherry leaf and produce, with reddened 

 veins and veinlets, a fine effect. 



Allied to the tree last mentioned the Bird 

 Cherry shares with it much of the charm of its 

 autumnal colouring : but the form of the leaf is 

 different, being rounder and somewhat less pointed 

 at the apex. The leaf-stalk of the Bird Cherry is 

 short and from the mid-stem, which traverses the 

 leaf, thin and not very prominent veins branch 

 alternately towards the finely serrated margin 

 near which they fork into branches that run into 

 each other. The venation is, in fact, peculiar in 

 the leaves of the Bird Cherry each pair of 

 parallel veins on either side of the mid- vein form- 

 ing together a sort of narrow arch. From the 

 outer sides of these arched veins, veinlets run to 

 the margin of the leaf. The remainder of the 

 venation is inconspicuous unless with the aid of a 

 glass or when the leaf is held against the light. 



