elymus

Century Dictionary and Cyclopedia

1. n. A genus of coarse perennial grasses, of northern temperate regions, allied to Hordeum. There are about a dozen species in the United States, some of which serve for hay and pasturage. Commonly known as rye-grass or lyme-grass.

WordNet 3.0

1. n. tall tufted perennial grasses (such as lyme grass or wild rye)