This name is a synonym of Carduus nutans .
The record derives from TICA
(data supplied on )
which reports it as a synonym (record 4701A74C-A2C6-4F68-83B7-D80E44533699
).
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 Carduus nutans in version 1 of The Plant List.