⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29204310, with some changes.
This name is a synonym of Penstemon floridus var. austinii .
The record derives from Tropicos which reports it as a synonym (record 29204310
) with original publication details: Bull. Torrey Bot. Club 32(4): 206 206 1905.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187182-2
.