This name is a synonym of Fraxinus angustifolia subsp. syriaca (Boiss.) Yalt..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 369706) with original publication details: Bull. Soc. Roy. Bot. Belgique 31(1): 95 1892.
This name was in version 1 of The Plant List, record kew-369706, and has not been changed.