Arrowleaf-Carey's Hybrid Balsamroot: Balsamorhiza careyana X sagittata

What appears to be a hybrid balsamroot with the parents being arrowleaf balsamroot (Balsamorhiza sagittata) and Carey's balsamroot (Balsamorhiza careyana) as seen along the Steins Pillar Trail #837, Ochoco National Forest..........May 21, 2017. Plants at this location (and at many others in the western Ochoco Mountains seem to show intermediate characteristics between the two species, while others approach either extreme.

What appears to be a hybrid balsamroot with the parents being arrowleaf balsamroot (Balsamorhiza sagittata) and Carey's balsamroot (Balsamorhiza careyana) as seen along the Steins Pillar Trail #837, Ochoco National Forest..........May 21, 2017. The involucre at left is more reminiscent of that found in Carey's balsamroot while the involucre from the plant at right is more reminiscent of arrowleaf balsamroot. Both plants are nearly side by side along the trail and are typical of dozens of others near that location.