⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50104061, with some changes.
This name is a synonym of Penstemon pseudospectabilis subsp. connatifolius (A. Nelson) D.D. Keck.
The record derives from Tropicos which reports it as a synonym (record 50104061) with original publication details: Amer. J. Bot. 18(6): 437-438 437 1931.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187304-2.