This name is a synonym of Ligusticum tachiroei (Franch. & Sav.) M. Hiroe & Constance.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1703976) with original publication details: Enum. Pl. Jap. 2(2): 373 1878.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:848731-1.
This name was in version 1 of The Plant List, record tro-1703976, and has not been changed.