The Arnold Arboretum, in conjunction with Jamaica Plain Open Studios, will host a juried group exhibition devoted to art inspired by the plants, landscape, and collections of the Arnold Arboretum. The theme for this year’s show is “Looking Closely.”  Join the Arboretum staff on Wednesday, September 19th at 6 pm for a reception with the artists in the Hunnewell Building Lecture Hall at the Arboretum.  The show will run through November 18, 2012.