This name is a synonym of Arrhenatherum elatius subsp. bulbosum (Willd.) Schübl. & G.Martens.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397476) with original publication details: Candollea 15: 13 1955.
This name was in version 1 of The Plant List, record kew-397476.