At Berkshire Botanical Garden, artist Ellen Driscoll’s solo exhibition features paintings of plants that help heal polluted lands | Arts and Theater

STOCKBRIDGE — Poplar leaves tip and glimmer dark chocolate and copper, as though they’re blowing in the moonlight.

Ellen Driscoll paints them in walnut ink and sumi, the ink Japanese artists have used in calligraphy sumi-e ink-brush painting for centuries.