As classified in WFO snapshot
December 2022
Warning: older classification
variety
Penstemon humilis var. brevifolius
This variety name was first published in Syn. Fl. N. Amer. 2(1): 267 (1878)
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-0001395378.