Elymus dahuricus Turcz. ex Griseb. - Daurian Couch, Daurian Wild Rye.

Taxonomic position.

Family Poaceae Benth. genus Elymus L.

Morphology and biology.

Perennial grass. Culms straight, robust, (30)50-120(140) cm tall, form loose mats. Nodes glabrous. Sheeths glabrous and smooth; leaves 3-10 mm wide, flat, less often with slightly convolute margins, green, usually glabrous and scabrous, less often with sparse hairs above. Spikes (5)7.15(19) cm long, dense, erect. Spikelets 10-15 mm long, by 2-3 in spike nodes, 3-4-flowered, greenish or purplish (but without glaucous bloom). Glumes 7-11 mm long, 3-5(7)-veined, lanceolate or linear-lanceolate, gradually sharpened, scabrous, with short awn up to 1 mm long, subequal to adjacent lemma. Rachilla scabrous. Lemma 6-9 mm long, lanceolate, at back scabrous, at apex with awn 10-15(20) mm long usually (at maturity) bent aside. Anthers 1.5-2.2 mm long. Flowers in June - August. Anemophilous. 2n=28, 42.


European part of the former USSR (alien), West and East Siberia, Far East, Central Asia; Iran, China (Xinjiang, Tibet, Himalayas, Manchuria), Mongolia, Japan.


In forest-steppe and steppe zone in upland meadows, meadow steppes, sometimes on stony steppe slopes, quite often thrives in fallows and at roadsides.

Use and economic value.

Forage grass.


Kharkevich SS., ed. 1985. Vascular plants of the Soviet Far East. V.1. Leningrad: Nauka. 398 p. (In Russian).
Malyshev LI., Peshkova GA., ed. 1990. Flora of Siberia. V.4. Poaceae (Gramineae). Novosibirsk: Nauka. 361 p. (In Russian).
Tzvelev NN. 1976. Grasses of the Soviet Union. Leningrad: Nauka. 788 p. (In Russian).

© L.L.Malyshev

© Photo by N.Yu.Malysheva, L.L.Malyshev

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