This name is a synonym of Bupleurum marginatum var. stenophyllum (H.Wolff) R.H.Shan & Y.Li.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Pflanzenr. IV, 228: 133 1910.
This name was in version 1 of The Plant List, record kew-2686651.