USA, Colorado, Jefferson, Golden, Ranson/Edwards Homestead Open Space Park. High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 250 meters southwest on the slope above the road.
39.8911 -105.2674 WGS 1984
Rocky alluvial ridge.
Somewhat ambiguous as to variety, but most like var. pacifica if infraspecific names are to be applied.