Northeastern Asian Flora
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Schoenus apogon Roem. & Schult.   (redirected from: Helothrix imberbis (R.Br.) Palla)
Family: Cyperaceae
[Chaetospora albescens Franch. & Sav., moreChaetospora imberbis R.Br., Chaetospora japonica Franch. & Sav., Chaetospora tenuissima Steud., Chaetospora umbellulifera Boeckeler, Helothrix imberbis (R.Br.) Palla, Isolepis margaritifera Nees, Schoenus apogon var. laxiflorus (Steud.) C.B.Clarke ex Cheeseman, Schoenus apogon var. reductus K?., Schoenus laxiflorus Steud., Schoenus vacillans Kirk, Scirpus margaritiferus (Nees) Boeckeler]
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  • Japan Flora
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Japan Flora: Culms tufted, many, slender, erect, 10-15 cm. long, smooth, 1- or 2-leaved; radical leaves erect, aggregated, about 0.5 mm. wide, the sheaths somewhat sanguineous, the mouth glabrous; corymbs 2 or 3, small, um- belliform or capitate, bearing 2-10 spikelets, the bracts seta­ ceous or leaflike, sheathing below; spikelets compressed, lance­olate, 4-6 mm. long, acute, stramineous, usually somewhat dark red-tinged, somewhat lustrous, with 5 or 6 scales; achenes about 1 mm. long, obovoid-globular, whitish, turgid, 3-angled, minutely reticulate, the bristles 6, nearly 2 mm. long, antrorsely scabrous, caducous.  

Honshu, Shikoku, Kyushu; rather rare. Ryukyus, Malaysia, and Australia.

 

Schoenus apogon
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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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