This name is a synonym of Malvaviscus arboreus Cav..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19600969) with original publication details: Fl. Carol. 177 1788.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:121906-2.
This name was in version 1 of The Plant List, record tro-19600969.