332 
BOTAKY. 
stout and rigid, erect, curved, triangular, smooth, obtusely mucronate, the 
inner faces striate ; sterile aments clustered, ovate, the anther-crest reduced to 
1-2 small protuberances ; cones 3-5' long, wide, terminal and mostly 
solitary, ovate-oblong, obtuse, "dark-brown;" scales 4-6" wide, with a 
rhombic slightly elevated summit, the transverse ridge acute, the umbo small, 
mucronate with a straight ascending awn ; seed 3" long, with a rather broad 
obtuse elongated wing. — Northern California, (Jeffrey.) Found only on the 
summit of the East Humboldt Mountains, Nevada, at 9-10,000 feet altitude, 
a few scattered trees of strict contracted habit, with thin light-gray bark, 
smooth on the branches, which were covered by the short crowded leaves ; 
cones 3-3 long, light-reddish-brown, with short awns. The Colorado 
form, (P. aristata, Eng., which has been identified with this species by Dr. 
Engelmaim,) has smaller cones, 2-3' long, dark-colored, the lance-subulate 
awn often 3" long. (1,112.) 
PiNUS FLEXiLis, Jamcs. DC. Prodr. 16. 2. 403. Middle-sized tree 
with mostly horizontal branches ; bud-scales ovate, acuminate, subfimbriate ; 
sheaths h! long, of several ovate and linear-oblong obtuse deciduous scales ; 
leaves 1-3' (usually 2') long, |" wide, in fives, densely crowded at the ends 
of tlie branchlcts, rigid, smooth, obtusely mucronate; sterile aments numer- 
ous, 3-ry' long, in a thick subterminal spike, the anther-crest small and 
irregularly incised-dentate, (or obsolete ;) cones 3-4, oval-oblong to ovate- 
cylindric, 2i-5' long, broad, obtuse ; scales very broad, (8-15",) with a 
short-cuueate base, thick, pitted usually on both sides, the compressed summit 
terminating in the erect acute semi-circular transverse ridge and a sub- 
rhombic acutish umbo ; seed 4-5'' long, 2h" wide, pale-colored, with a rudi- 
mentary whiir. — Bark rather thin, scaly, reddish or sometimes dark-gray. 
Rocky ^louutains, from New Mexico to AVashington Territory. The preva- 
lent pine in the East Humboldt Mountains, Nevada, and frequent in the 
Wahsatch and Uintas ; (;,500-ll,000 feet altitude. The aged trees of the 
East Humboldt Mountains, often 250-500 years old and 2-3° in diame- 
ter, rarely 50° high, are too knotty and cross-grained to be valuable for 
timber. (1,113.) 
Abies Engelmanni, l^u•ry. {Pinus commutata, Pari. DC. Prodr. 16. 
2. 417.) A tall pyramidal tree with horizontal branches; branchlets pubes- 
cent; l)nd-scalos ovate, obtuse, squarrose ; leaves crowded, 6-15" long, rigid, 
compressed-tetra-onal, abruptly and somewhat obtusely mucronate, very 
