Not an accepted name (status: unknown). The accepted name is Penstemon rattanii var. kleei (Greene) A.Gray, 1886.

Penstemon rattanii subsp. kleei (Greene) D.D.Keck, 1880 4% complete

No common name

Proc. Amer. Acad. Arts 15: 50 (1880)

There is no corrections for Penstemon rattanii subsp. kleei yet.