⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2616673, with some changes.
This name is a synonym of Asclepias tuberosa .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Trans. Amer. Philos. Soc. n.s., 11: 174 1860.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:1963-2
.