United States, Arizona, Coconino, Coconino National Forest, Lower West Fork Canyon of Oak Creek about 10 mi north of Sedona. Appx. 100' upstream from canyon mouth, near where trail crosses creek for the first time; within NE section of Red Rock/Secret Mountain Wilderness.
34.988056 -111.747778
34d 59m 17s n 111d 44m 52s W
1646 meters
5400ft.
Riparian, right on creek bank.
Acer negundo, Ostrya knowltoni, Phacelia, Rubus
Appears to have more A. cannabinum influence than A. androsaemifolium