This name is a synonym of Fraxinus angustifolia subsp. oxycarpa (Willd.) Franco & Rocha Afonso.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 369729) with original publication details: Fl. Ital. 8: 168 1888.
This name was in version 1 of The Plant List, record kew-369729.