Northeastern Asian Flora
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Leymus duthiei (Stapf ex Hook.f.) C.Yen, J.L.Yang & B.R.Baum   (redirected from: Asperella sibirica var. longiaristata Hack.)
Family: Poaceae
[Asperella duthiei Stapf ex Hook.f., moreAsperella longearistata (Hack.) Ohwi, Asperella sibirica var. longiaristata Hack., Elymus asiaticus subsp. longearistatus (Hack.) A.L?e, Hystrix duthiei (Stapf ex Hook.f.) Bor, Hystrix duthiei subsp. longiaristata (Hack.) Baden, Fred. & Seberg, Hystrix longearistata (Hack.) Honda, Leymus duthiei var. japonicus (Hack.) C.Yen, J.L.Yang]
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  • Japan Flora
  • Japan Flora
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Japan Flora: Rhizomes short; culms 70-100 cm. long, slender, short-pubescent below the spike and on nodes; leaf­blades flat, thin, broadly linear to lanceolate, 10-25 cm. long, 1-2 cm. wide, green; spikes exserted, pendulous, 10-15 cm. long, slender, the axis densely pubescent; spikelets sessile, 10- 12 mm. long, 1- or 2-flowered, green; florets readily deciduous; glumes subulate, 4-6 mm. long, sometimes wanting; lemmas about 10 mm. long, sparsely hispid toward the apex, the awn straight, 15-20 mm. long; rachilla slender; palea as long as the lemma, lanceolate. June-July. Mountain woods.

Hok­kaido, Honshu, Shikoku, Kyushu; rather rare. Korea.

Japan Flora: Rhizomes slen­der; culms in loose tufts, slender, 60-80 cm. long, smooth; leaf­blades deep green, thin, flat, broadly linear, 10-20 cm. long, 8-15 mm. wide; spikes slender, pendulous or prominently nod­ding, about 10 cm. long, the axis glabrous; spikelets solitary, sessile, 1-flowered, slightly ascending; florets readily deciduous; glumes wholly suppressed or short-subulate, to 4 mm. long; lemmas about 10 mm. long, lanceolate, long-hispid near the margin, the awn erect, slender, 15-25 mm. long; rachilla slender; palea as long as the lemma.                  June-July. Woods.

Honshu (Shinano and westw.), Shikoku, Kyushu; rare.

Leymus duthiei
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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