• WordNet 3.6
    • n Elymus tall tufted perennial grasses (such as lyme grass or wild rye)
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Century Dictionary and Cyclopedia
    • n elymus 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.
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In literature:

Elymus came in next, and close behind him Diores.
"The Children's Hour, Volume 3 (of 10)" by Various
ELYMUS, a genus of grasses, natives chiefly of the north temperate zone.
"The New Gresham Encyclopedia" by Various
Otherwise nearly as in Elymus.
"The Manual of the Botany of the Northern United States" by Asa Gray