As depicted in Massachusetts County Checklist, prior to 2011 osage orange had been already documented as naturalized in a few counties across MA: Hampden, Middlesex, Essex, and Barnstable (that is, on Cape Cod). This is the oldest of osage orange trees at the Arboretum located near the Centre Street wall. Its true origin is unknown: it was received from Germany in 1936 (i.e., was at least 85 years old in 2021 when the photo was taken).