. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 11 70 WHITE PINE. Pinus Strobus, Linnaeus. FORM—At present seldom exceeding 3 ft. In diameter and 125 ft. In height, nsnally 60-90 ft. high and 1) to 8 ft. in diameter. When grown In dense stands (Figs. 1 and 10) the trees are tall, straight, free from lateral branches for a considerable distance from the ground, have little stem-taper and shallow crowns. When grown in the open (Pig. 34, specimen on left), It has much stem-taper, is relatlvley low, often forked, covered with persistent lateral branches almost to th
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 11 70 WHITE PINE. Pinus Strobus, Linnaeus. FORM—At present seldom exceeding 3 ft. In diameter and 125 ft. In height, nsnally 60-90 ft. high and 1) to 8 ft. in diameter. When grown In dense stands (Figs. 1 and 10) the trees are tall, straight, free from lateral branches for a considerable distance from the ground, have little stem-taper and shallow crowns. When grown in the open (Pig. 34, specimen on left), It has much stem-taper, is relatlvley low, often forked, covered with persistent lateral branches almost to the ground which make it attractive ornamentally but of low commercial value. BAEK—On young branches, thin, smooth, greenish-brown; later scaly and darker. On old trees thick, dark gray, and divided by long and shallow fissures Into broad longitudinal ridges (See Big. 44.) TWIGS—Slender, flexible, at first hairy, slightly roughened by raised leaf-scars. New growth at first light green and erect. During first winter light brown In color, less erect in position, very resinous If punctured. BUDS—In terminal cluster, ovate-oblong, sharp-pointed, with numerous brown, long-pointed and overlapping scales. Apical bud i-i of an inch long. Lateral buds about J of an inch long. LEAVES^Light green when young and bluish-green, soft, flexible, 2J-5 Inches long when mature; persist usually until end of second season,, occur in clusters of five, are triangular in cross-section, contain one flbro-vascalar bundle, have finely serrate edges and are surrounded at the base by a deciduous sheath. FLOWERS—Appear about May. Staminate flowers clustered at base of new growth of season, yellow, oval, about i of an inch long. Pistillate flowers solitary or in small groups, lateral along new growth, pinkish-purple, cylindrical, about } of an inch long. FRTTIT—A cone maturing in two seasons, 5-10 Inches long, drooping, stalked, slightly curved, and covered with thin unarmed scales without thickene
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