批碱草属（学名：Elymus），又作披碱草属，是禾本科小麦族中的一个多年生属的植物。广泛分布在北半球的温带地区。

• 维基物种中有关批碱草属的分类信息

In Greek and Roman mythology, Elymus (or Elumos) was the mythical ancestor of the Elymians, natives of Sicily. Elymus was a Trojan, a natural son of Anchises and a brother of Eryx.

Previous to the emigration of Aeneas, also a son of Anchises, Elymus and Acestes had fled from Troy to Sicily, and had settled on the banks of the river Crinisus, in the country of the Sicani. When afterwards the Trojan refugees led by Aeneas also arrived there, Elymus built for them the towns of Segesta and Elyme, and the Trojans who settled in that part of Sicily called themselves Elymi, after Elymus.