Box Elder is a species of maple native to North America. The bark is pale gray or light brown, deeply cleft into broad ridges, and scaly. Unlike most other maples which usually have palmately lobed leaves, Box elder has pinnately compound leaves that usually have three to seven leaflets.
Fun Fact Acer negundo was identified in 1959 as the material used in the oldest extant flutes from the Americas that were made of wood. These early artifacts, excavated by Earl H. Morris in 1931 in the Prayer Rock district of present-day Northeastern Arizona, have been dated to 620-670 CE.