| arrhenatherum | (n) oat grass, Syn. genus Arrhenatherum |
| tall oat grass | (n) coarse perennial Eurasian grass resembling oat; found on roadside verges and rough grassland and in hay meadows; introduced in North America for forage, Syn. evergreen grass, false oat, French rye, tall meadow grass, Arrhenatherum elatius |