. Bulletin. Forests and forestry -- United States. 40 A PRIMER OF FORESTRY. -f: m iiig ouly a single kind; in other words, in pure forest. (See fig. 34 and PL XIX.) Tbe Longleaf Pine of the South Atlantic and Gulf States is of this kind, and so is the Lodgepole Pine of the West. Conifers are more apt to grow in pure forest than broadleaf trees, because it is more common for them to have winged seeds. The greater part of the heavy-seeded trees in the United States are de- ciduous, and most of the deciduous trees grow in mixed forest, although there are some conspicuous excep- tions. But even in
. Bulletin. Forests and forestry -- United States. 40 A PRIMER OF FORESTRY. -f: m iiig ouly a single kind; in other words, in pure forest. (See fig. 34 and PL XIX.) Tbe Longleaf Pine of the South Atlantic and Gulf States is of this kind, and so is the Lodgepole Pine of the West. Conifers are more apt to grow in pure forest than broadleaf trees, because it is more common for them to have winged seeds. The greater part of the heavy-seeded trees in the United States are de- ciduous, and most of the deciduous trees grow in mixed forest, although there are some conspicuous excep- tions. But even in mixed forests small groups of trees with heavy seeds are com- mon, because the young trees naturally start up beneath and around the old ones. A heavy seed, dropping from the top of a tall tree, often strikes the lower branches in its fall and bounds far out- side the circle of tlie crown. Trees which are found only, or most often, in i)ure forest are the social or gregarious kinds; those which grow in mixture with other trees are called scattered kinds. Most of the hardwood for- ests in the United States are mixed; and many mixed forests, like that in the Adirondacks, contain both broad-. FiG. 38.—Sprouts of Gray Birch •with a small White Oak in the foreground. Milford, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Division of Forestry. Washington : G. P. O.
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