This name is a synonym of Rumex bucephalophorus L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50079684) with original publication details: Fl. Franç. 3: 7 1778.
This name was in version 1 of The Plant List, record tro-50079684, and has not been changed.