MAPLE 171 



not essentially larger than the laterals, but may exhibit 

 more scales. Twigs with pale fine longitudinal cracks, 

 and the older often with pronounced corky ridges. Leaf- 

 scars crescentic and meeting at their ends round the twigs 

 as in A. platanoides (Fig. 59/). The only similar cases 

 are furnished by small twigs of Acer pseudoplatanus, where, 

 however, both milky latex and corky ridges as well as 

 pubescence are wanting : A. platanoides has the milk but 

 no hairs. Moreover the terminal bud of both is larger. 



In Acer campestre the leaf-bases project slightly, and 

 the buds are nearly erect and appressed ; bud-scales with 

 whitish cilia, and twigs often, but not always, pubescent at 

 the tips, elsewhere polished olive-green or leather-yellow 

 to tawny, with numerous but minute lenticels. Older 

 branches greyish and fissured, or, if corky, tawny red- 

 brown. 



The bud-scales are leaves. The outer 5 6 pairs 

 exhibit a gradually more distinct venation, while the 

 sixth to eighth pairs show the lobing of the lamina and 

 typical venation. The scales and their scars are con- 

 joined at the edges, and are narrow crescentic. The 

 transverse section of the bud is rhomboidal, owing to 

 the keels of the decussate scales. 



/~7 l~l Tissues devoid of latex ; twigs not tawny 

 and corky ; buds glabrous. 



Buds ovoid-pointed, more or less 4- 

 angled and green, appressed. Twigs 

 matt-green with, 4 equidistant thin 

 ridges. 



Euonymus europceus, L. Spindle Tree (Fig. 85). The 

 matt-green of the twigs, which are bitter to the taste, 

 may pass to violet-green, or brownish, to olive, and the 

 4 slender ridges render them more or less quadrangular. 



