Not an accepted name (status: unknown). The accepted name is Penstemon virgatus var. asa-grayi (Crosswh.) Dorn, 1988.

Penstemon virgatus subsp. asa-grayi A.Gray, 1858 4% complete

No common name

W.H.Emory, Rep. U.S. Mex. Bound. 2(1): 112 (1858)

There is no corrections for Penstemon virgatus subsp. asa-grayi yet.