Leymus arenarius (L.) Hochst.
Family: Poaceae
Leymus arenarius image
Lynn Clark  

Plants weakly cespitose, rhizomatous, strongly glaucous. Culms 50-150 cm tall, (2)3-6 mm thick, usually glabrous throughout, occasionally pubescent distally to 5 mm below the spike. Leaves exceeded by the spikes; ligules 0.3-2.5 mm; blades 3-11 mm wide, with 15-40 adaxial veins. Spikes 12-35 cm long, 15-25 mm wide, usually with 2 spikelets per node; internodes 8-12 mm, surfaces glabrous, edges ciliate. Spikelets 12-30 mm, with 2-5 florets. Glumes 12-30 mm long, 2-3.5 mm wide, lanceolate, tapering from below midlength, stiff, glabrous towards the base and usually distally, sometimes pubescent distally, the central portion thicker than the margins, 3(5)-veined at midlength, keeled or rounded over the midvein, midveins and sometimes the margins with hairs to about 1.3 mm, apices acuminate; lemmas 12-25 mm, densely villous, hairs 0.3-0.7 mm, 5-7-veined, acute, occasionally awned, awns to 3 mm; anthers 6-9 mm, dehiscent. 2n = 56.

Leymus arenarius is native to Europe. It has become established in sandy habitats around the Great Lakes and the coast of Greenland. It has also been found at a few other widely scattered locations. It is sometimes cultivated, forming large, attractive, blue-green clumps, but its tendency to spread may be undesirable.

Much like no. 2 [Leymus mollis (Trin.) Pilg.] but more glaucous and less hairy, the culms glabrous or nearly so even at the summit, the glumes stiffer, glabrous or inconspicuously hairy; 2n=56. Native of n. and w. Europe, locally intr. about the Great Lakes. (Elymus a.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Indiana Coefficient of Conservatism: C = null, non-native

Wetland Indicator Status: FACU

Leymus arenarius image
Lynn Clark  
Leymus arenarius image
Lynn Clark  
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
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Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
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Leymus arenarius image
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Mona Terwedow  
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image
Leymus arenarius image