⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29203930, with some changes.
This name is a synonym of Penstemon eriantherus var. whitedii (Piper) A. Nelson.
The record derives from Tropicos which reports it as a synonym (record 29203930) with original publication details: Bot. Gaz. 22(6): 490-491 490 1896.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187859-2.