Spalted Hackberry, Celtis occidentalis, is a medium-size deciduous tree native to North America. Also known as the Nettletree or Beaverwood, it is a moderately long-lived hardwood with a light yellowish gray to light brown color with yellow streaks. Some Hackberry produces striking black lines that provide a stunning contrast. The leaves are distinctly asymmetrical and coarse-textured; the cork-like bark has wart-like protuberances. The Hackberry tree produces small berries that turn orange-red to dark purple in the autumn, often staying on the trees for several months.