This name is a synonym of Begonia paucilobata var. maguanensis (S.H.Huang & Y.M.Shui) T.C.Ku.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362253) with original publication details: Acta Bot. Yunnan. 16: 338 1994 publ. 1995.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:982171-1.
This name was in version 1 of The Plant List, record kew-362253, and has not been changed.