As classified in WFO snapshot
December 2024
latest classification for this taxon
subspecies
Penstemon triphyllus subsp. typicus
D.D.Keck
This subspecies name was first published in Univ. Calif. Publ. Bot. 16: 422 (1932)
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .