As classified in WFO snapshot
December 2023
latest classification for this taxon
variety
Penstemon davidsonii var. praeteritus
This variety name was first published in Leafl. W. Bot. 10: 129 (1964)
At the time of this classification snapshot, this variety name was accepted by WFO (placed as the accepted name of a taxon). Its description and other taxonomic data can be found on World Flora Online, id: wfo-0001375769.