Kelly's gorgeously economical plant drawings are full of tender lucidity Though best known as a painter of scrupulous hard-edge abstractions, Ellsworth Kelly (1923-2015) saw drawing plants as playing a central role in his art. "The drawings from plant life seem to be the bridge to the way of seeing that brought about the paintings in 1949," Kelly wrote in 1969. That way of seeing, he said, was "the basis for all my later...