Preview Blue Penstemon (Penstemon cyaneus), Shoshone National Forest, Wyoming, United States of America, North America Image ID: 764-1989 Artist: James Hager Purchase a commercial license Buy framed prints & more from our print store color image travel photography travel destinations day outdoors nature natural world botany flower flowers united states of america usa north america wild flowers close up close ups detail details vertical wyoming blue penstemon penstemon cyaneus shoshone national forest