Not an accepted name (status: unknown). The accepted name is Penstemon laricifolius var. exilifolius (A.Nelson) Payson, 1924.

Penstemon laricifolius subsp. exilifolius (A.Nelson) D.D.Keck, 1924 4% complete

No common name

Bull. Torrey Bot. Club 64:381. 1937

There is no corrections for Penstemon laricifolius subsp. exilifolius yet.