THE HEMLOCK GROUP 131 
Lebanon and grows in shape of slender spire against 
a sky, so similarly does the T. Albertiana differ from 
the T. Canadensis. While the more Western Hemlock 
at quieter rate of growth tapers upward, the Canadian 
Hemlock, like the Cedar of Lebanon, displays a 
lateral top growth, which nursery gardeners more 
bluntly call clump-headed. 
Two more signs of recognition must be looked for, 
as between these two, the stalkless cone and less- 
defined hue of the white stomata on lower side of 
leaf of the new-comer, by which the Albertiana pro- 
claims his whence and title to a separate name. 
T. BRUNONIANA is the other of the serrulate-leafed 
trio, the Himalayan represéntative of the: Hemlock 
Spruces. Its much longer leaves, their brilliantly- 
lighted-up silvery under-surface, their longer conical- 
shaped yellow-brown cones, make the tree, which 
unfortunately. does not acclimatize well with us, an 
easy target for identification. 
We now come to the entire-leaved-margin trio— 
namely, the T. SreBorpu, T. Diversirozia, T. 
CAROLINIANA. 
Of these the T. Sieboldii asserts the individuality 
alone among Hemlocks of glabrous shoots.. Its leaf 
is longer than any except that of the Brunoniana. 
From the Brunoniana it also differs, as has been 
pointed out, in leaf margin. There is yet another 
' marked difference. While the apex of the leaf of the 
Brunoniana -is acute, that of the Sieboldii is rounded 
and notched. 
The Sieboldii also again can be distinguished from 
another Japanese representative, the Diversifolia, 
by the fact that its shoots are glabrous while the 
Diversifolia’s are pubescent. 
The Caroliniana Hemlock, discovered by Professor. 
Gibbes in the Blue Ridge mountains of N. and S. 
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