This name is a synonym of Cyanus triumfettii subsp. axillaris (Čelak.) Štěpánek.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 8321BB7B-4B66-47B3-8379-DF276863959F) with original publication details: "Rouy, Fl. France 9. 1905." 144 1905.
This name was in version 1 of The Plant List, record gcc-68476.