Norway maple

"Ironically, many of these street trees were replaced by other introduced invasive species such as Norway maple or callery pear," she said, "which in turn have their own impacts."

London planetrees predominate, as do honey locusts, pin oaks, Norway maples and Callery pears, the latter known for their clusters of white flowers.

A: Maple trees have some of the worst surface roots, the worst being the now much-maligned Norway maple.

Large oak and birch trees, as expected, lined the path; not expected were shallow-rooted Norway maples splintered across it, the result of a recent nor’easter.

The ban also covers Norway maple trees, burning bush and the groundcovers periwinkle and English ivy.