This name is a synonym of Arrhenatherum elatius subsp. vulgare (Fr.) Hyl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25557306) with original publication details: Novit. Fl. Suec. Mant. 1: 4 1842.
This name was in version 1 of The Plant List, record tro-25557306, and has not been changed.