This name is a synonym of Oncidium constrictum (Lindl.) Beer.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 137621) with original publication details: Edwards's Bot. Reg. 29(Misc.): 17 1843.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:646455-1.
This name was in version 1 of The Plant List, record kew-137621.