This name is a synonym of Malvastrum americanum (L.) Torr..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50137863) with original publication details: Encycl. 3: 754 1792.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:561558-1.
This name was in version 1 of The Plant List, record tro-50137863.