This name is a synonym of Bupleurum marginatum var. stenophyllum (H.Wolff) R.H.Shan & Y.Li.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50165918) with original publication details: Edinburgh J. Bot. 48(1): 43 1991.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:966750-1.
This name was in version 1 of The Plant List, record tro-50165918.