⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50107550, and has not been changed.
This name is a synonym of Penstemon violaceus (Brandegee) A. Nelson.
The record derives from Tropicos which reports it as a synonym (record 50107550) with original publication details: Bot. Gaz. 27(6): 456 456 1899.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187739-2.