Calochortus umpquaensis
It is endemic to Oregon in the United States , where it is mainly limited to the region of the Klamath Mountains on the Little River in Douglas County , in particular the Watson and Ace Williams Mountains . 
<triplet> Oregon <subj> Douglas County <obj> contains administrative territorial entity <triplet> Klamath Mountains <subj> Oregon <obj> located in the administrative territorial entity <triplet> Little River <subj> Douglas County <obj> located in the administrative territorial entity <triplet> Douglas County <subj> Oregon <obj> located in the administrative territorial entity