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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. and develops a large spreading head. 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, 3-5-lobed leaves with sharply 

 serrate margins, acute-based sinuses, and pubescent lower leaf-surfaces. In winter the large, 

 obtuse, greeu buds are characteristic together with the leaf -scars which do not quite encircle 

 the stem. The lenticels 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 scaly. 



This tree is one of our most attractive ornamental trees and is planted extensively along 

 the streets in 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, ami 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 smaller 3-5-lobed 

 leaves of the Sycamore Maple with sharply serrate leaf-margins. A certain test for identifying 

 the Norway Maple is the presence of milky sap in the leaf-petiole which readily exudes upon 

 twisting. In winter the Nor^^ay Maple can be recognized by the large, obtuse, glossy, red 

 buds, which may be more or less olive-green at the base and by the lateral closely appressed 

 buds. The leaf-scars which encircle the stem are also characteristic. The very divergent wings 

 of the large maple keys and the closely fissured, but not scaly bark will also aid in recog- 

 ing it. 



