252 



WHITE BEAM 



form cross-ties : they are fairly strong, those of the outer 

 side of the lower secondaries particularly so, transverse 

 and close. The veins of higher orders very fine. 



[The leaf of the Pear is tomentose when young, but 

 becomes glabrous or nearly so : it has a finer and more 

 prominent reticulation and a longer, more slender petiole, 

 and the dwarf shoots tend to be thorny. See p. 274.] 



# Doubly serrate, teeth large and sharp; 

 venation pinnate, with the secondaries 

 running straight to the margins, and 

 giving off strong outer branches and 

 forks. 



Pyrus Aria, Ehrh. White Beam (Fig. 89). Medium 

 tree, with very white undersides to the leaves. Leaf 



Fig. 89. White Beam, Pyrus Aria, p. 252 (D). 



