In the run-up to what promises to be a marathon year for Charline von Heyl (a major survey of her work is currently on view at the Tate Liverpool), a recent exhibition of a decade’s worth of her paintings and works on paper at the Philadelphia ICA gave visitors a sampling of what is surely one of the more challenging, complex—and enjoyable—bodies of contemporary abstract painting. For von Heyl, painting is as alive as ever; it is the medium’s fecundity in the here and now that interests her most. If the burden of modernism is at issue in her work, it is as a storehouse of pictorial