2. Fe monticola Dougl. —->¥estern ‘hite Pine. >A stately forest treé 
great beauty, 350-50 m. tall, characterized by the glaucous blue-green foli 
and erect, columnar shaft. - Trunk of mature trees with very slight taper 
very straight, and under ordinary forest conditions, are pruned of branc 
for 50-60 feet; D.B.H. commonly 1 m., rarely as much as 2 m. in old trees 
branchlets slender, reddish brown, somewhat roughened by the leaf bases; *~ 
young bark grey, very smooth, dully shining, lenticles few and inconspi@uons 
aS ay 
resin pockets frequent, checking longitudinally at about 25-30 years, 
becoming darker, with a pepper and salt aspect, infrequently somewhat scaly,’.” : 
suggesting the bark of P. contorta, the mature bark 2.5-3.5 cm. thick, ©: ag 
grey with a reddish tint, broken into small rectangular plates 5 cm. x 8 cms 
the fissures rarely 1.5 cm. deep, browmmish. Crown oblong, rather obtuse, =. 
rounded .in old trees, the branches horizontal but drooping somewhat, of 
characteristic aspect at a distance by reason the spacing between whorls. 
Foliage glaucous with a bluish tint, the needles 5 per Cluster, deciduous 
by the third or fourth year, very fine and pliant, 6-8 om. long, scorcoly 
1-1.5 mm. wide, glaucous, 3-angled, the margins minutely and sparsely toothed 
apex acute bat not mucronate, each flat inner surface bearing 2-4 lines 
of stomata; beatep quickly deciduous leaving the base naked. Ovulate 
cones borne in the apex of the crown, 15 ma. long, in flower,purple, 
cylindrical, the scales suborbicular, becoming green or dark purple before ~~ 
opening, pendulous on a short stalk at maturity, rarely persistent on the 
tree after maturity, 15-20 cm. long, cylindrical, tapering at both ends, 
the scales 5-4 cm. long, oblong or oblong-obovate, mahogany-colored within, 
the tip clay-colored, smooth, polished, the umbo inconspicuous, apical, 
commonly with a resin drop; seeds 5-7 mm. long, the wing Oblong, 18-20 mm. 
long, Shining. ‘Seedlings 4-5 cm. tall, light green and rather glaucous, 
cotyledons triangular in cross-section, 6-10, withered but often persistent 
the second year, 2-2.5 cme long,l mm. or less wide, very acute, minutely 
and sparsely glandular, ciliolate toward the base; first leaves about 1 cm. 
long,rather flat, acute, the margins minutely toothed, the first fascicles 
appearing in the axils of these, 2-3 cm. long. 
Reaches its greatest development on moist northerly slopes and flats 
from 2500-4500 feet, but has been observed as high as 6200 feet associated 
bat 
pas 
‘ 
9 
“4 
with Tsuga Mertensiana, Abies lasiocarpa and Pinus albicaulis. in the early 
life of the forest is associated especially with Larix occidentalis and 
Pinus contorta. As the forest approaches maturity, it_is associated more 
commonly with Abies srandis, Fseudotsuga ; Isuga neterophylla and 
Thuja plicata but yields gradually to the tivo latter specias. Is the most 
taxifolt 
valuable commercial tree of our regione Bears cones as young as 14-16 years, 
usually not earlier than 20-25 years. 
bala gt 
aie anihiaaied 
