⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2655267, with some changes.
This name is a synonym of Asclepias quadrifolia .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Amer. Monthly Mag. & Crit. Rev. 1: 39 1818.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:94716-1
.