This name is a synonym of Kearnemalvastrum lacteum (Aiton) D.M. Bates.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19603118) with original publication details: Hort. Kew. 2: 448 1789.
This name was in version 1 of The Plant List, record tro-19603118.