T. La Doux, Heath Bartosh, Robert E. Preston, Jepson Herbarium Workshop.
USA, California, San Bernardino, Eastern end of Sacramento Mountains, along dirt roads 4 miles south of I-40 and Hwy 95 junction, c. 1 mile east of Flattop Mtn. and 2 miles south of Eagle Peak (Flattop Mountain. 7.5' Q).