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Planted on the campus of APSU, there are a few of these scattered around.
Hard to tell without more info on the size, but the 5 point star on the bottom says Rose to me
It's almost certainly a member of the Rosaceae family, which includes your apples, cherries, ect., but I'm not positive if this is Crabapple or Hawthorn, from this picture. Check the tree for thorn or thorny structures. It can be hard to tell these two apart, because Crabapple (Pyrus coronaria) has false thorns, which are actually fruiting stems, and Hawthorn (Crataegus spp.) has true thorns. I think I see one of these "true" thorns in the picture, but I'm not sure. Hope I helped. :)