. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 204 SYCAMORE MAPLE Acer Pseudo-platanus, Linnaeus The Sycamore Maple Is a European species. It is native to central Europe where It attains a height of 120 ft. ami d«>velop8 a large spreading heart. The trunk is sometimes furrowed and the bark flakes off in thin scales. This tree is considered the most attractive of the Maples for ornamental planting. It is rather intolerant of soil conditions and consequently not planted so extensively as the Norway Maple. The Sycamore Maple is readily distinguished by its firm
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 204 SYCAMORE MAPLE Acer Pseudo-platanus, Linnaeus The Sycamore Maple Is a European species. It is native to central Europe where It attains a height of 120 ft. ami d«>velop8 a large spreading heart. The trunk is sometimes furrowed and the bark flakes off in thin scales. This tree is considered the most attractive of the Maples for ornamental planting. It is rather intolerant of soil conditions and consequently not planted so extensively as the Norway Maple. The Sycamore Maple is readily distinguished by its firm, 3-6 lobed leaves with sharply serrate margins, acute-based sinuses, and pubescent lower leaf-surfaces. In winter the large, obtuse, green buds are characteristic together with the leaf-scars which do not quite encircle the stem. The lentioels are also more numerous and the lateral buds stand out from the twig more than on the Norway Maple. The fruit keys are also smaller and the wings less divergent than those of the Norway Maple. NORWAY MAPLE Acer platanoides, Linnaeus The Norway Maple is a European species extending from Norway to Switzerland. It attains a height of 100 ft. and develops a round head. The trunk of the tree is closely fissured but not pcaly. This tree is one our most attactive ornamental trees and is planted extensively along the streets of cities, and in lawns and parks. It is especially adapted for city planting because it is more tolerant of unfavorable city conditions than our native Maples. It is also rather free from the attacks of insects and fungi, and retains the leaves longer in fall than our native species. The wood is of no commercial importance in America, but is used for minor purposes in Europe. The Norway Maple can readily be distinguished in summer by its large leaves which resemble those of our Sugar Maple, but are deeper in color and firmer in texture. The large-toothed and almost entire-margined leaves are readily recognized from the smal
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