788 PINACE 4 PSEUDOTSUGA 
TSUGA 
in diameter: scales nearly twice as broad as long: bracts-not exserted. On 
the higher parts of the Cascade Mountains. 
A. nobilis Lindl. Penny Cyc. i, 30. A very large tree 200-300 feet 
high and 3-6 feet in diameter, with spreading branches and somewhat rough 
dark gray or blackish bark: leaves rigid, acute or obtuse, 1-2 inches long, on 
the lowest branches and on young trees somewhat 2-ranked, flattish and slightly 
- grooved; on the upper branchlets curved upward and covering the upper side, 
glaucous and keeled on both sides: cones cylindrical-oblong, 5-9 inches long, 
2-4 inches in diameter, almost covered by the exserted and reflexed cuneate 
cuspidate-pointed bracts: scales 12-18 lines wide by 12-15 lineslong: seed 
slender, with a cuneate somewhat retuse wing nearly as long as the scale: coty- 
ledons 7 or 8. Common in the high mountains at 4000-6000 feet elevation, 
Washington to California. 
8 PSEUDOTSUGA Carr. Uonif. ed. 2, 256. 
Large trees with rough dark brown or whitish bark, flat dis- 
tinctly petioled evergreen leaves, that are stomatose only on the 
lower side, with 2 lateral resin-ducts close to the epidermis of the 
lower side, leaving on the branchlets scarcely prominent trans- 
versely oval raised scars. Flowers monoecious, from the axils 
of the previous year’s leaves. Staminate flower an oblong or 
subcylindric column surrounded and partly enclosed by numer- 
ous conspicuous orbicular bud-scales: commissure of the anthers 
terminating in a short spur; the cells opening obliquely by one 
continuous slit: pollen grains ovate-subglobose. Pistillate flow- 
ers with the scales much shorter than the broadly linear acutely 
2-lobed long-pointed or aristate bracts. Cones maturing the first 
year, with persistent scales and exserted bracts. Seeds without 
resin-vesicles. Cotyledons 6-10. 
P. Douglasii Carr. 1. c. A large tree 100-300 feet high and 2-15 feet 
in diameter: leaves linear, mostly obtuse, 8-18 lines long, but slightly if at all 
2-ranked, glossy green above, white with a green midnerve beneath: staminate 
aments oblong -cylindrical, 5-10 lines long: cones oblong to cylindrical, 1-4 
inches long: scales 10-14 lines wide, broader than long: bracts 2-3 lines wide, 
more or less exserted, acutely 2-toothed or lacerate at the apex, the prominent 
midnerve prolonged into along subulate awn: seed triangular, convex and red- - 
dish-brown on the wpper side, flat and-white on the lower side, about 8 lines 
long, with an oblong usually obtuse wing 3-5 lines long. Common from 
Alaska to Mexico and the Rocky Mountains. 
9 TSUGA Carr. Conif. 185. 
Large evergreen trees with slender often drooping terminal 
branchlets and monoecious flowers. Leaves flat or somewhat 
angled, with a single dorsal resin-duct, conspicuously petioled, 
articulated upon a prominent and at length ligneous persistent 
base. Staminate flowers a subglobose cluster of stamens in the 
axils of last years leaves, the long stipe surrounded by numerous 
bud-scales: commissure of the anthers terminating in a short 
spur or knob: anther-cells opening transversely by a continuous 
slit. Pistillate aments terminal on the previous year’s branchlets: 
bracts somewhat shorter than the scales. Cones maturing the 
first year, pendulous, the scales and enclosed bracts persistent on 
