Large Flowered Collomia, a native species, has been added to the USWildflowers database (07/07/2012.) Scientific name is Collomia grandiflora.  Photo below was taken along the Kleinschmidt Grade in Adams County, ID on May 25, 2012. Go to the Large Flowered Collomia detail page for more photos and information.

Large Flowered Collomia, Grand Collomia, Mountain Collomia – Collomia grandiflora