Draba hitchcockii Rollins × Draba oligosperma Hook.

Idaho: Butte County: Southern end of the Lost River Range, vicinity Mackay, Elbow Canyon (just S of Pass Creek Gorge), ca 1/4 mi into canyon. Elev. 6600 ft.
T7N R26E S17 NE SW
Datum: NAD 27. Uncertainty: 800 meters. Coordinate Source: TRS2LL.
Limestone talus with N aspect. Adjacent forest community dominated by Pseudotsuga menziesii, Pinus flexilis, and Cercocarpus ledifolius; associates include Draba hitchcockii, Draba oligosperma, Antennaria microphylla, Phlox hoodii. Plants rare. Corolla cream yellow. Label states collector is A. F. Chowela. Should be A. F. Cholewa. Phenology: Flowers.

A. F. Cholewa 856, May 23, 1982
ID, Accession: 83006, Barcode: ID069918