This name is a synonym of Crepis praemorsa (L.) Tausch.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 2B379B8A-F703-4ABB-9B17-F0603FF7714C).
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 Crepis praemorsa in version 1 of The Plant List.