United States, Arizona, Coconino County, Grand Canyon National Park; north rim. Rd. to Nankoweap trailhead, about 2 miles from end of rd., at turnoff to jeep rd. which leads to upper Thompson Spring.
36.25917 -112.055
Rare in loamy soil
with Engelmann spruce, mixed conifers, Quaking aspen
Up to 60 centimeters tall; flower white with very light purple sepals