This name is a synonym of Acaulimalva rhizantha (A.Gray) Krapov..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19601503) with original publication details: Chlor. Andina 2: 276 1857.
This name was in version 1 of The Plant List, record tro-19601503, and has not been changed.