This name is a synonym of Euphorbia pubentissima Michx..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 81313) with original publication details: Sketch Bot. S. Carolina 2: 660 1824.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:101807-2.
This name was in version 1 of The Plant List, record kew-81313, and has not been changed.