As classified in WFO snapshot
June 2025
latest classification for this taxon
variety
Penstemon fruticosus var. crassifolius
(Lindl.) Krautter
This variety name was first published in Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania 3: 100 (1908)
This variety name has been reclassified since this snapshot. Its current preferred usage is a synonym .