This name is a synonym of Scorzonera humilis L..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 036C2E64-3C67-4DEF-8254-142D06A9885F).
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Scorzonera candollei in version 1 of The Plant List.