
410 THE SYLVA OF MONTANA. 
tree can exist. P. Banksiana and P. resinosa have been re- 
ported to grow along the Spokan river, but I am sure none 
occurred at parts I have visited, and think this and the pre- 
ceding have been mistaken for them. 
Western Warre Pine (Pinus monticola). I found scat- 
tered trees of this beautiful species on the highest parts of 
the Rocky Mountains, but from the east base of the Cœur 
d'Alene Range to its summit it rapidly became one of the 
most übundant and luxuriant trees, again disappearing grad- 
ually, but faster, as we descended their west slope. It at- 
tains a diameter of four feet, and a height, probably, near 
one hundred and fifty, resembling the eastern White Pine 
(P. strobus) in habit, but with finer grooved bark (like that 
of Carya tomentosa, Mockernut), more slender and shorter 
leaves, and much larger cones. The wood is very fine- 
grained and soft. The specimens, from stunted trees in the 
Bad Lands at Little Rocky Mountain creek of the Missouri, 
are so different as to seem distinct in species, or at least a 
very marked variety, probably the latter. | 
Brack Spruce (Abies Menziesii). This Black Spruce is 
as abundant on the higher parts of the Cœur d’Alejie as on 
the coast, and presents exactly the appearance described in 
my former report. It is perhaps less in size, but has the 
same drooping, dense twigs and foliage that give so sombre 
an appearance to the coast forests. I saw it nowhere else 
on the route. 
OnEGON YerLow Fir (A. grandis and amabilis). From 
many specimens of cones and leaves, together with observa- 
tions on the trees, I am strongly inlined to consider these 
the same species, not varying more than several others. The 
lower white and smooth-barked form, with dense growth 
and foliage, appeared moderately common on the east slope 
of the Coeur d’Alefie Mountains, and across the summit. 
On the west slope it gradually became taller, more open in 
s and foliage, the cone larger and with broader 
NEP He the bark grooved more a. more, and darker in 
Dt ^ 

