The record derives from TICA
(data supplied on )
which reports it as a synonym (record
3D499F44-0E71-4D49-8349-408AC9BAE084) with original publication details: Biol. Cent. Amer. Bot.2: 98. 1881. 98 1881.
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 Eupatorium orizabae in version 1 of The Plant List.