⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29201492, with some changes.
This name is a synonym of Penstemon clevelandii var. stephensii (Brandegee) Munz & I.M. Johnst..
The record derives from Tropicos which reports it as a synonym (record 29201492) with original publication details: Zoë 5(9): 151 151 1903.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187793-2.