⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Penstemon heterophyllus in version 1.1 of The Plant List.
This name is a synonym of Penstemon heterophyllus var. purdyi .
The record derives from Tropicos which reports it as a synonym (record 29201369
) with original publication details: Univ. Calif. Publ. Bot. 16(11): 409-410, f. 15 409 1932.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187539-2
.