⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29204286, with some changes.
This name is a synonym of Penstemon procerus var. formosus (A. Nelson) Cronquist.
The record derives from Tropicos which reports it as a synonym (record 29204286) with original publication details: Proc. Biol. Soc. Wash. 17(12): 100 100 1904.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:808098-1.