⚠ Version 1 of The Plant List has been superseded.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 gracilis in version 1.1 of The Plant List.

Penstemon gracilis subsp. wisconsinensis (Pennell) Pennell is a synonym of Penstemon gracilis var. wisconsinensis (Pennell) R.W. Benn.

This name is a synonym of Penstemon gracilis var. wisconsinensis (Pennell) R.W. Benn..

The record derives from Tropicos which reports it as a synonym (record 29201356) with original publication details: Monogr. Acad. Nat. Sci. Philadelphia 1: 571 571 1935.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187446-2.