Northeastern Asian Flora
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Eleocharis attenuata (Franch. & Sav.) Palla  
Family: Cyperaceae
[Eleocharis attenuata f. laeviseta (Nakai) H.Hara, moreEleocharis attenuata var. laeviseta (Nakai) H.Hara, Eleocharis attenuata var. major (H.Hara) Masam., Eleocharis japonica var. major Nakai, Eleocharis laeviseta Nakai, Eleocharis laeviseta var. major (Nakai) H.Hara, Eleocharis leviseta Nakai, Eleocharis major H.Hara, Scirpus attenuatus Franch. & Sav.]
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Japan Flora: culms 30-50 cm. long, densely tufted, ribbed, about 1 mm. thick; spikelets scarcely proliferous, ovoid to narrowly so, densely many-flowered, 4-12 mm. long, 2.5-4 mm, thick; scales membranous, elliptic or oblong, about 2 mm. long, rounded at apex, pale and reddish ferrugineous; achenes obovate, 1.2 mm. long, tawny, lustrous, smooth, obtusely 3-angled, the style base depressed, 2/3 to nearly as wide as the body of the achene, rather acute on the basal angles, the bristles 6, smooth, about as long as the body of the achene. July-Oct Wet places; Honshu (Shinano Prov.; Kutsukake); rare. Korea.

var. attenuata. Brisdes retrorsely scabrous, usually slightly longer than the body of the achene. Wet places; Honshu, Shikoku, Kyushu. Ryukyus.

Eleocharis attenuata
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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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