Northeastern Asian Flora
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Carex oligosperma Michx.   (redirected from: Carex tsuishikarensis Koidz. & Ohwi)
Family: Cyperaceae
[Carex despreauxii Steud., moreCarex oakesiana (Torr.) Raf., Carex okesiana Dewey, Carex okesii Eaton, Carex oligosperma var. churchilliana Raymond, Carex oligosperma var. tsuishikarensis (Koidz. & Ohwi) B.Boivin, Carex tsuishikarensis Koidz. & Ohwi, Olamblis oakesiana (Torr.) Raf.]
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  • Japan Flora
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Japan Flora: Culms 2050 cm. long, gla­brous; leaf-blades glaucous-green, thick, sulcate above, nearly smooth, about 1.5 mm. wide, the basal sheaths light gray; spikes 2 or 3, distant, erect, the terminal staminate, linear, 2-3 cm. long, the lateral pistillate, ovoid-globose to oblong, rather densely flowered, 1-1.5 cm. long; lowest bract leaflike, sheathing; pistillate scales broadly ovate, acute, castaneous, paler and scari이is toward margin; perigynia longer than the scales, 5-5.5 mm. long, obliquely spreading, broadly ovoid, slightly turgid, rather coriaceous, grayish green and partially dark brown, glabrous, nerved, abruptly short-beaked, 2-toothed at tip; stigmas 3, short, June-Aug. Bogs and swampy places in lowlands.

Hokkaido, Honshu (Rikuchu and Shinano Prov.); rare.  s. Kuriles and e. N. America.

Carex oligosperma
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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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