Helianthus pauciflorus subsp. subrhomboideus Nutt. (Rydb.) O. Spring & E. Schilling
USA, Colorado, Jefferson, Golden, Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 436 m. west of Plainview Road.
39.8894979 -105.2669867 WGS84
1988 meters (6521ft)
Comp., yellow, tall, solitary heads full of bugs, opposite leaves.
Plants of Jefferson County Open Space. Sheet 1 of 2 Associated with Catalog #KHD00061673