Featured Exhibitions & ShowsMeghean Warner Art Exhibition (Through May 30): Acrylic paintings in the Grand Hallway.Shelley Bolton Art Exhibition (Through May 29): Abstract works influenced by Cubism at the Memphis Botanic Garden.Three Man Show (Opening May 9): Local artists E.D. Bynum, Jr., Joe Umphress, and Marc Wheetley at St. George’s Art Gallery.Mary Sims: A Retrospective (Through June 7): At the Dixon Gallery & Gardens.Dixon Gallery & Gardens Exhibiti…