1. Cluster of leaves, × 1.
2. Cross-sections of leaves, enlarged.
3. Partly opened cone, × 3/4.
4. Cone-scale with seeds, × 1.
PINACEAE
White Pine
Pinus strobus L.
HABIT.—A large tree 60-80 feet high, with a trunk diameter of 2-4 feet; forming a wide, pyramidal crown. Formerly trees 100-150 feet in height and 5-7 feet in trunk diameter were not exceptional.
LEAVES.—In clusters of five; 3-5 inches long; slender, straight, needle-shaped, 3-sided, mucronate; pale blue-green. Persistent about 2 years.