As classified in WFO snapshot
December 2024
latest classification for this taxon
variety
Penstemon fruticosus var. douglasii
(Hook.) C.K.Schneid.
This variety name was first published in Ill. Handb. Laubholzk. 2: 615 (1911)
This variety name has been reclassified since this snapshot. Its current preferred usage is a synonym .