This name is a synonym of Launaea secunda (C.B.Clarke) Hook.f..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 23CBE5A6-0A41-423D-B098-E03F4C1684D5).
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 Chondrilla secunda in version 1 of The Plant List.