e East. Wood white and soft like that of the
White Pine.

[Illustration: P. Strobus.]

3. =Pinus Strobus=, L. (WHITE PINE. WEYMOUTH PINE.) Leaves in fives, 3
to 4 in. long, from a loose, deciduous sheath; slender, soft, and
whitish on the under side. Cones 4 to 6 in. long, cylindric, usually
curved, with smooth, thin, unarmed scales. Tall (100 to 150 ft. high),
very useful tree, of white, soft wood nearly free from resin and more
extensively used for lumber than any other American tree. Has been
common throughout, but is getting scarce on account of its consumption
for lumber.

[Illustration: P. monticola.]

4. =Pinus monticola=, Dougl. (MOUNTAIN-PINE.) Leaves in fives, 3 to 4
in. long, from short, overlapping, very deciduous sheaths; smooth,
glaucous green. Cones 7 in. long and 1 3/4 in. in diameter, cylindric,
smooth, obtuse, short-peduncled, resinous, with loosely overlapping,
pointless scales. A large tree, 60 to 80 ft. high, resembling the White
Pine, and often considered a variety of it, but the foliage is denser;
Pacific coast.

[Illustration: P. flexilis.]

5. =Pinus flexilis=, James. (WESTERN WHITE PINE.) Leaves 2 to 3 in.
long, rigid, entire, acute, densely crowded, sharp-pointed, of a rich
dark green color, 5 together in lanceolate, deciduous sheaths. Cones 4
to 6 in. long and half as wide, subcylindric, tapering to the end,
semipendulous, clustered. Scales thick, woody, obtuse, loose, 1 1/4 in.
broad, yellowish brown. Seeds rather large, with rigid margins instead
of wings. A handsome hardy tree from the Pacific Highlands, occasionally
cultivated. It resembles the eastern White Pine, but is more compact and
of a darker color.

[Illustration: P. Cembra.]

6. =Pinus Cembra=, L. (CEMBRA PINE. SWISS STONE-PINE.) Leaves 3 to 4 in.
long, from a medium-sized deciduous sheath; triangular, rigid, slender,
straight, crowded, dark green with a glaucous surface; 5 together. Cones
2 1/2 in. by 2 in., ovate, erect, with obtuse, slightly hooked, but
pointless scales. Seeds as large as peas and destitute of wings. A
slow-growing, cultivated tree, 40 to 80 ft. high. Forms a regular cone;
branches to the ground; Europe; hardy throughout.

[Illustration: P. Taeda.]

7. =Pinus Taeda=, L. (LOBLOLLY OR OLD-FIELD PINE.) Leaves in twos and
threes, 6 to 10 in. long, with elongated, close sheaths; slender and of
a light green color. Cones in pairs or solitary, lateral, 3 to 4 in.
long, oblong, conical; the scales having