Nature provides the subject for the beautifully intricate patterns and graceful lines of the art of Charlie Burk. His subject is clearly grass, with a horizon line or a slice of sky visible in many of his works as he moves in his world of sumptuous colors and delicate patterns. In a complex play of call-and-response, one brushstroke calls for the next. What really interests me, he says, is the texture grass creates and the way it moves in space. Another equally powerful pull is the visual beauty and the artistic journey it presents, that ever-fresh experience of dancing on the edge between abstract and representational art.