30) Nr. 2. C. H. OSTENFELD and C. SYRACH LARSEN: 
limits of, L. occidentalis. This area of distribution corre- 
sponds with the more alpine character of L. Lyallü, which 
is therefore found at higher altitudes than the latter on 
the great mountain chains bounding their mutual domains. 
(See Maps III & VIII). 
L. Lyallii, in contrast to L. occidentalis, is of very small 
importance as a forest tree. Under favourable conditions, 
it succeeds in reaching a height of 20—25 m., but is 
frequently lower. It grows but slowly in the harsh climate 
of the upper forest-line, where it has its home; BRANDEGEE 
counted as many as 562 annual rings in a trunk about 50 
cms. in diameter. 
From the taxonomic point of view, L. Lyallü and L. 
occidentalis resemble one another closely, and it is also prob- 
able that their characteristics can vary to such an extent, 
that they overlap. Even so, they are, nevertheless, so dis- 
similar, that they must be regarded as two different species. 
The cone is larger than that of L. occidentalis (3,5—5 cms. 
in length), but has the same open form, and the long, vis- 
ible bracts which characterise the latter. The scales are 
more pilose, and become a little more recurved at maturity. 
The cone at the flowering-stage has dark red, rarely green, 
scales, while the bracts are of more pronounced red shade. 
The long mucro of the bract is also deep red, in contrast 
with L. occidentalis (U. S. Nat. Mus.). The male flower is 
long, the young shoots are strongly pilose, the hairs light 
brown; the leaves are 2,5—4 cms. in length, and blueish- 
green; the transverse section shows them to be rhomboid, 
and considerably thicker than those of L. occidentalis. The 
leaves, which may be as long as those of L. occidentalis, 
are more quadrangular than those af any other species, 
which fact, together with the densely pilose young shoots, 
