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WAYSIDE AND WOODLAND TREES. 
(^Salix phylicifolia). None of them occur south of Yorkshire, 
and the chief distinction between the two species (?) consists in 
the leaves of nigricatis turning black when being dried for the 
herbarium, whilst those of S. phylicifolia do not. 
The Osier {Salix viminalis). Many of the foregoing Willows, 
when cut down low and induced to send out long, slender shoots, 
are known as Osiers, but only two species are botanically re- 
garded as Osiers — this and the Purple Osier (.S’, purpurea). 
The present species may remain as a shrub or grow into a small 
tree, thirty feet high, with long, straight branches, which are 
silky when young, but afterwards become polished. The leaves 
vary in length from four to ten inches, and are slenderly lance- 
