This name is a synonym of Pseudolysimachion kiusianum (Furumi) Holub.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 29207830) with original publication details: Bot. Mag. (Tokyo) 30(351): 122–123 1916.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:812170-1.
This name was in version 1 of The Plant List, record tro-29207830.