Not an accepted name (status: unknown). The accepted name is Penstemon laetus var. leptosepalus Greene ex A.Gray, 1886.

Penstemon laetus subsp. leptosepalus (Greene ex A.Gray) D.D.Keck, 1859 16% complete

No common name

Proc. Boston Soc. Nat. Hist. 7: 147 (1859)

There is no corrections for Penstemon laetus subsp. leptosepalus yet.