Penstemon humilis Nutt. ex A. Gray var. humilis
Annotated by Heather Zimba, 2020. Sources: Intermountain Flora.

Idaho: Butte County: 1.2 air km SW from the intersection of Doublespring Pass Rd and Christian Gulch Rd near Christian Gulch. Elev. 1603 m.
44.310432° N, 113.811364° W
Datum: WGS 84. Uncertainty: 3 meters. Invalid coordinates (located outside county bounds).
Burned sagebrush zone that is now dominated by grasses (Artemisia and shrub skeletons mark extent of fire). Shallow gulch that features a prominent and large basalt outcropping which faces south. Dry soil with very little exposed ground due to grasses, except the various basalt exposures. Terrain is flat within the base of the gulch as well as dry with no evidence of ephemeral streams. Female grouse witnessed greater than 200 m from site. Violet-blue flowers, found in rocky soil/mostly rock.

T. Styhl 19-127, Jun 12, 2019
With D. Stone, J. Houghton
ID, Accession: 191190, Barcode: ID196728