This name is a synonym of Cota tinctoria subsp. euxina (Boiss.) Oberpr. & Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 903CCFFE-E911-4F9E-B0CE-A7E1516C2C9E) with original publication details: Enum. Pl. Caucas.: 230 (1900) 230 1900.
This name was in version 1 of The Plant List, record gcc-61596.