Northeastern Asian Flora
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Carex ischnostachya Steud.  
Family: Cyperaceae
[Carex ischnostachya var. fastigiata T.Koyama, moreCarex ischnostachya var. subtumida K?., Carex nagasakensis C.B.Clarke, Carex ringgoldiana Boott, Carex ringgoldiana var. stenandra Franch. & Sav., Carex subtumida (K?.) Ohwi]
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  • Japan Flora
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Japan Flora: Rhizomes densely tufted; culms erect, 30-60 cm. long, rather firm; leaf-blades flat, deep green, 5-10 mm. wide, the basal sheaths bladeless, dark reddish; spikes 3-6, contiguous except the lower ones, the terminal one staminate, pale, filiform, 2-3 cm. long, shorter than the pistillate, the pistillate cylindric, rather loosely to rather densely many­flowered, erect, 2-5 cm. long, the bracts leaflike, longer than the culm, long-sheathing; pistillate scales small, broadly ovate, obtuse, entire, pale; perigynia 3-4 times longer than the scales, narrowly ovoid, 3.5-5 mm. long, inflated, erect-patent, obso- letely 3-angled, glabrous, olive-colored, prominendy nerved, gradually rather long-beaked, obliquely truncate and hyaline at tip; stigmas 3, slender, short. Apr.-June. Wet places in lowlands and hills, especially along streams.

Hokkaido, Hon­shu, Shikoku, Kyushu; common.  Ryukyus, Korea, and China.

Carex ischnostachya
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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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