United States, Colorado, Denver, Near Platte River, Valverde.
39.6969452 -104.9925129 +-5000m. WGS84
According to the Gazetteer Valverde was a post along the Colorado and Southern. There is now a Valverde Park just west of the Platte near the railroad tracks. I plotted the UTM east of the park on the Platte. RA
Asclepias engelmanniana Woods., det. R.E. Woodson, Jr., no date. Originally ID Acerates auriculata Engelm.