This name is a synonym of Phagnalon rupestre subsp. illyricum (H.Lindb.) Ginzb..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record FEA03136-6C70-47FE-81CA-89D48FFC6C5E) with original publication details: P. Fourn.. 1939. 950 1939.
This name was in version 1 of The Plant List, record gcc-93006.