ARBORETUM AND FRUTICETUM. PARY 111. 
all comparison with that of the common white willow, and even ex- 
ceeding that of S. Russellidna (No. 24. in p. 1517.). The wood and 
bark are at least equal in quality to those of S. alba. The foliage 
is distinguished by its great luxuriance, more azure hue, and the 
almost entire want of the hairs from the under side of the adult 
leaves. Mr. Crowe thought the stipules might afford distinctions, 
but we find them too variable.” (Sm. in Rees’s Cyclo., vol. xxxi. No. 
140.) Mr. Forbes says: “ Although this plant has been reunited 
with S. alba, it appears to me to be sufficiently distinct, and to be 
recommended for the quickness of its growth ; the leaves are, also, 
much larger than the last when cut down, and, as well as the twigs, 
are of a darker hue.” In the parish of Waterbeach, Cambridgeshire, 
_ there are numerous trees of S. alba, the vigorous shoots and branches 
of which, and especially those of pollard trees, have red bark, which, 
when the trees are leafless in winter, are very conspicuous. This 
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