⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29204276, with some changes.
This name is a synonym of Penstemon deustus subsp. sudans (M.E. Jones) Pennell & D.D. Keck.
The record derives from Tropicos which reports it as a synonym (record 29204276) with original publication details: Contr. W. Bot. 8: 37 37 1898.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187800-2.