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The DSU Arboretum was established in 2012 (Yost & Calabrese) assisted by Herbarium Staff and volunteers. The Arboretum developed from the Campus Tree Walk (Yost 2006) . Informational signs were purchased and mounted on one of each of the 174 species of trees and shrubs on the Delaware State University Campus in Dover. A companion map was then developed to guide people to visit all the species represented in this living collection . Arboretum brochures with map and tree species lists are available at the Claude E. Phillips Herbarium, and online at download from this website. Additionally, the DSU Arboretum website has a webpage for each of the 174 species of trees/shrubs, with detailed descriptions, photographs, herbarium specimen scans, campus location, planting history, etc., along with a tree slide show; available at