A guide to nonnative invasive plants inventoried in the north by ...

Acer platanoides
Norway maple ACPL
Form: Deciduous tree 40-80 ft (12-25 m) tall.
Leaves: Opposite leaves palmately lobed with 5-7 lobes; the
margins have a few large teeth. Buds large, over 1/4 in. (0.6
cm), green or reddish, and blunt.
Flowers/fruit: Yellowish-green flowers in rounded clusters
give way to large samara fruit.
Habitat: Vacant lots, successional forests, upland fields, and
hedgerows.
Other distinguishing features/notes: Broken leafstalk of
Norway maple yields milky juice (sugar maple yields clear
juice). Also, wings of the samara on Norway maple diverge
at almost 180 degrees (sugar maple diverges at a narrower
angle, about 120 degrees). Winter: resembles sycamore
maple, but edges of opposing leaf scars meet on Norway
maple twigs.
Notes