⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2655316, and has not been changed.
This name is a synonym of Asclepias schaffneri .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Contr. Univ. Michigan Herb. 11: 289 1978.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:21341-2
.