Ranges from 2500 to 6200 feet or more. 
Pinus monticola or P. contorta in young growth or with Pseuwotsuga ears 
It is persistent by reason of its ability. 
taxifolia in Douglas fir types. 
to withstand fire, due to thickg basal bark and is consequently often the. 
. Is a rapid growing tree of small shade 
only seed tree left after fire ; 
tolerance and consequently is infrequent in the older stages of the foreste . <= 
2. Le Lyallii Parl.—Alpine Larch. ———> A slender tree with resinous 
wood, 15-20 me tall, as much as 1 nm. D.BeH., 
spreading, eee Teale kecke, be trees, often gnarled and contorted; {a >? 
ranchlets rather reddish, 
D 
Groolly) 13 leaf scars, 
or less scaly; 
but bright green, soft and pliant, 
longitudinally striate, 
scaly, resembling that of Picea, 
Is commonly associated with. 
the branches irregularly 
, becoming grfy, tinged with brown below S. 
the young bark lustrous, soon becoming 
in mature trees shallowly fissured and 
proken into oblong plates 10-15 cm.long or more, the plates remaining more 
bud scales thin and membranous, white-woolfy; leaves pale 
3-4 cme long, acute, smooth, 20-50 in 
each cluster normally, though as few as 8-9 in stunted forms, flattened 
tetragonal in cross-section, a small oil duct along either margin; staminate 
cones 3-4 mm. long, pale yellow; ovulate cones ovate-oblong, with wine-red. 
scales and glabrous practs which are abruptly acuminate, 
8-12 mm long; 
mature cones narrowly ovate or cylindrical, 5-5 cm. long, 2-225 cm. thick 
when opened, sessile or nearly so, the scales orbicular, thinly pubescent; 
seeds 225-5 mm lon;,, their wings ovate-elliptical 5-6 mm. long. 
Abundant on talus slopes near the summit of -ioman Nose Lite, 6000-7000 
ft., forming fairly pure stands; wature trees occur near the Cirque lake, 
associated with Finus albicaulis and Abies dasiocarrca, 
apie 6 specimen of 
14 inches DeBeE. showed somethdt less than 400 annual rings. 
