⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29204331, with some changes.
This name is a synonym of Penstemon scariosus var. albifluvis (England) N.H. Holmgren.
The record derives from Tropicos which reports it as a synonym (record 29204331) with original publication details: Great Basin Naturalist 42(3): 367-368 367 1982.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187128-2.