as a Tree Campus USA since 2009 and formally recognized as an accredited ArbNet Arboretum since 2017. Penn maintains an interactive website linked to Penn's comprehensive tree inventory, which allows users to explore Penn's entire collection of trees. The 92-acre second arboretum Morris Arboretum is the official arboretum of the Commonwealth of Pennsylvania and includes more than 13,000 labelled plants of 2,500 types, representing the temperate floras of North America, Asia, and Europe, with a primary focus on Asia.
=== New Bolton Center ===
Penn also owns the 687-acre (278 ha) New Bolton Center, the research and large-animal health care center of its veterinary school. Located near Kennett Square, New Bolton Center received nationwide media attention when Kentucky Derby winner Barbaro underwent surgery at its Widener Hospital for injuries suffered while running in the Preakness Stakes.
=== Libraries ===
Penn library system has grown into a system with 300 full-time equivalent (FTE) employees, and a total …
