This name is a synonym of Oxalis dillenii Jacq..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50326306) with original publication details: Boissiera 7: 6 1943.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:269411-2.
This name was in version 1 of The Plant List, record tro-50326306.