p, trichocarpa T. & Ge Vale hastata lenrye Cottomrood, A straight 
——_ 
erect tree 20-25 me tall or sore, 
he older bark darker, lightly fissured and rather scaly, 
young bark smooth, light gray -or drab, 
with lenticels, t 
in mature trees (4 fte D, Bell.) becoming fissured to a depth of 5 cm., the 
ridges 5-5 Cm. apart y clayecolored and flattened on the surface as though 
vith a trowels leaves exceedingly variable in size and outline, varying 
from lanceolate, 5-20 cme long (in juvenile foliage and on suckers), to 
proadly ovate, 5-15 cm. long (ordinary foliage of mature trees), acuminate, 
rounded at the base (cuneate in the narrower forms) or sometimes cordate, 
lvery beneath, often rusty, especially along the veins, 
“- . 
all< ery pale or 51 
~ ~ 
rosinous when young, lightly crenste-serrate, petioles about equal to the 
blade or shorter, secrete, commonly puberulent; staminate catkins stout, 5-0 
cm, long, stamens numerous, anthers -urole, shorter then the filaments, 
pistillase catkins 6-12 cm. long, 12-15 cme in fruit, rachis and globose 
overy pubescent 5 capsules 6-7 Me long, ovoid, crowded, 1-5 Mey distant. 
Sommon throughout our rogion chiefly below 3000 fte, rarely above 
4000 fte, 2 Common entrant in young burns but quickly shaded out, reaching 
its greatest development in alluvial soil. 
Ge Pp, balsamifera Le Balsam Popvlare Trees with straicht rather massive 
of as much as 1 me. or more, the young 
bark yellow tinged or rusty, with da 
emer en rmen 
deevly furrowed, the furrows as much as 3 inches deen on old trees, the 
trough acute, the ridges pl 
ing; leaves commonly 9-12 cm. long, 7-9 cig broad, broadly ovate, rounced 
and uniformly cordate a the base, abruptly acuminate ot the avex, dark 
sreen above, white or sometines rusty beneath, on petioles about half as 
long as the blade, terete; staminate catkins 5-5 cme long, with 50-60 
stamens in cach flower, she anther 
s dark red, the pistillate catkins common] 
oe 
—" es 
a ee es 
SN) er eee ee 
lar enc 
rk lenticels, the mature bark light gray, 
aned but somewhat roughened, irregularly anastomo; 
