This name is a synonym of Galinsoga parviflora Cav..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 2088BB36-7A68-4728-B5F9-926FA947896D).
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 Galinsoga parviflora in version 1 of The Plant List.