As classified in WFO snapshot
December 2024
latest classification for this taxon
form
Penstemon barbatus f. flaviflorus
(M.E.Jones) Pennell
This form name was first published in Contr. U.S. Natl. Herb. 29: 114 (1945)
This form name has been reclassified since this snapshot. Its current preferred usage is a synonym .