Norway Maple (Acer platanoides)
Tree. Introduced in 1756; extensively planted as an ornamental.
- Bark is grayish and smooth with a network of low ridges.
- Leaf stems exude a white sap when broken off twig.
- Flowers, which appear very early in spring (April) are yellow-green in color.
- Paired, papery fruit are divergent, nearly 180º apart.
- Retains leaves into late fall which often have round, black, fungal spots this time of year.
Escapes from planted landscapes into natural areas where it out-competes native vegetation, reducing forest diversity.