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Norway Maple

Acer platanoides

Common Name: Norway Maple
Scientific Name: Acer platanoides
Family: Aceraceae
Growth Form: Tree
Native Range: Europe, from Norway to Caucasus and Northern Turkey
Invasive Range: Forest ecosystems throughout the Northeast and parts of the Pacific Northwest
Introduction: The Norway maple was introduced to the United States in 1756 as an ornamental plant.  It continues to be sold for this purpose.
Description: ·Leaves: Opposite and simple with long irregular teeth; palmately 5 lobed with 5 main veins from base; 10-18 cm (4-8 in.) long.  Leafstalk produces milky-white sap when broken off.

·Bark: Rough, with narrow anastamosing ridges.  Grey or brown.

·Twigs: Slender and smooth, brown.

·Flowers: Greenish-yellow, 3mm (.1in.) long.  Radially symmetrical.  Appear in early spring before leaves.

·Fruit: Paired keys, between 4 and 5 cm (2-2.5 in.) long.  Tan. Green when young. Possess long wings and flat body.  
Threats: Norway maples have dense shallow roots and produce heavy shade that prevents grass from growing under them. Occasionally, the roots will even choke the parent tree. The Norway maple out-competes native vegetation.
Fun Facts: The Norway maple is an excellent tree for cities, as it is highly tolerant of smoke and dust. 
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