This name is a synonym of Pseudolysimachion linariifolium subsp. dilatatum (Nakai & Kitag.) D.Y. Hong.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50066717) with original publication details: Rep. First Sci. Exped. Manchoukuo 4(1): 54 1934.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:50997471-1.
This name was in version 1 of The Plant List, record tro-50066717, and has not been changed.