United States, Colorado, Jefferson, Jefferson County Open Space Park.
39.6929333333 -105.206333333 NAD-27
Matthew/Winters, Jefferson County Open-Space Park situated on County Road 93, 0.1 mile south from its junction with US Hwy 40 & Interstate Hwy I-70. Collection sites are located on Red Rocks trail, 300-400 yards south of the parking lot, located in north.
damp, slightly humic clayey soil in an open meadow
rabbitbrush, Heterotheca fulcrata & grasses past flowering & fruiting