This name is a synonym of Arrhenatherum elatius f. servitii (Domin) Podp..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25557305) with original publication details: Beih. Bot. Centralbl. 26: 275 1910.
This name was in version 1 of The Plant List, record tro-25557305, and has not been changed.