10. Leaf
scar usually clearly concave at the upper edge (see photo),
base of bud often within the arc of the leaf scar top; undersurface
of leaves whitened, much lighter in color than the upper
surface.
10.
Leaf scar usually
straight across the top or nearly so, bud clearly above the
top of the scar; undersurface
of leaves green or only slightly lighter than the upper
surface.
