This name is a synonym of Leontodon hirtus L..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4A913FA8-2EA9-4382-8859-2DBB730F8034).
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 Thrincia hirta in version 1 of The Plant List.