This name is a synonym of Trichocentrum jonesianum (Rchb.f.) M.W.Chase & N.H.Williams.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 460269) with original publication details: Gard. Chron. III, 4: 234 1888.
This name record (from WCSP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Oncidium jonesianum in version 1 of The Plant List.