Western Trillium, a native species, has been added to the USWildflowers database (10/27/2012.) Scientific name is Trillium ovatum. Photo below was taken in Ponderosa State Park, Valley County, ID on June 1, 2012. It is also known by the common names Western White Trillium, Pacific Trillium, and one variety as Oettinger’s Trillium. Go to the Western Trillium detail page for more photos and information.