As classified in WFO snapshot
June 2025
latest classification for this taxon
subspecies
Penstemon heterophyllus subsp. australis
(Munz & I.M.Johnst.) D.D.Keck
This subspecies name was first published in Univ. Calif. Publ. Bot. 16: 411 (1932)
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .