The Old World Hop Hornbeam is also known by several other names, including the Ironwood tree, Eastern Ironwood, or Ostrya. This deciduous tree is native to Europe and Asia, and it's known for its unique bark texture that looks like muscle fibers. The tree's wood is an excellent source of lumber, which is why it's popular in furniture manufacturing and carpentry. The Ironwood tree is also known for its small, hop-like fruits that attract various birds and insects. The Ironwood tree is low-maintenance and highly resistant to pests and diseases, making it a popular ornamental tree in home gardens and parks.