Not an accepted name (status: unknown). The accepted name is Penstemon heterophyllus var. australis Munz & I.M.Johnst., 1924.

Penstemon heterophyllus subsp. australis (Munz & I.M.Johnst.) D.D.Keck, 1836 4% complete

No common name

Edwards's Bot. Reg. 22: t. 1899 (1836)

There is no corrections for Penstemon heterophyllus subsp. australis yet.