⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-155821, with some changes.
This name is a synonym of Physostegia virginiana subsp. virginiana .
The record derives from WCSP which reports it as a synonym (record 155821) with original publication details: Naturaliste Canad. 93: 574 1966.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:195684-2.