Northeastern Asian Flora
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Carex thunbergii Steud.   (redirected from: Carex gaudichaudiana var. thunbergii (Steud.) K?k.)
Family: Cyperaceae
[Carex brachysandra Franch., moreCarex gaudichaudiana f. brachysandra , Carex gaudichaudiana var. thunbergii (Steud.) K?k., Carex koidzumiana Ohwi, Carex koizumiana Ohwi, Carex micrantha var. tenuinervis K?., Carex thunbergii var. brachysandra Miyabe & Kud, Carex thunbergii var. platycarpa Franch. & Sav., Carex thunbergii var. quinquenervis Franch. & Sav., Carex tricuspidata K?.]
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  • Japan Flora
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Japan Flora: Rhizomes long-creeping; culms 20-80 cm. long, erect; leaves somewhat flaccid; basal leaf-sheaths with blades, pale, partially brownish or purplish, the upper leaf-blades 1.5-4 mm. wide, soft, glaucous above, with slightly involute margins; staminate spikes solitary or sometimes 2, rarely 3, linear, 2-6 cm. long, the pistillate 2 or 3, long-cyl indr ic to oblong, 2-5 cm. long, erect, usually subsessile; pistillate scales oblong, dark reddish purple to purplish brown, paler toward the margins; perigynia 3-3.5 mm. long, oblong to elliptic, planoconvex, faintly nerved, pale green, obsoletely puncticulate, abruptly very short-beaked with an entire tip; stigmas 2, rather stout. May-June. Common in rice paddies and in swampy river flats;

Hokkaido, Honshu. Very polymorphic.

var. appendiculata (Trautv.) Ohwi. Rhi­zomes rarely creeping; culms densely tufted; leaves less soft.  May-July. Wet places, especially in bogs; Hokkaido, Honshu (Senjogahara in Nikko). Sakhalin, s. Kuriles, Kamchatka, Amur, Ussuri, and n. Korea.

Carex thunbergii
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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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