United States of America, Colorado, Boulder, On Poorman Rd, with entrance located at its junction with 4-Mile Canyon Rd, which itself is located about 1.9 miles north from its junction with Colo. Hwy 119. Thence eastward on Poorman Rd 1/2 to 1 mile from 4-Mile Canyon Rd.
For additional information about this specimen, please contact: Jennifer Ackerfield, Head Curator of Biodiversity Collections (jennifer.ackerfield@botanicgardens.org)