⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-2608246, and has not been changed.
This name is a synonym of Asclepias tuberosa subsp. interior .
The record derives from Tropicos which reports it as a synonym (record 2608246
) with original publication details: Fl. New England 447 447 1969.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:21315-2
.