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Polytrichum juniperinum : ウィキペディア英語版 | Polytrichum juniperinum
''Polytrichum juniperinum'', commonly known as juniper haircap moss, is an evergreen and perennial species of moss that is widely distributed, growing on every continent including Antarctica.〔(Polytrichum juniperinum ), U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.〕〔(Plants For A Future. Plant Database ).〕 ==Description== The stems are reddish with grey-green leaves that have a distinctive red-brown tip.〔(Polytrichum juniperinum ), The British Bryological Society. British mosses and liverworts a field guide.〕 This characteristic allows them to be separated from the bristly haircap, a plant that the juniper haircap moss have a close resemblance to; the difference is that the bristly haircap have a green tip.〔(Juniper haircap ). Ecomare.nl. Retrieved on 2011-05-22.〕 The leaves of juniper haircap moss are lanceolate and upright spreading when dry, and when moist, wide-spreading. Although their growth form can be varied, they generally grow in thin, interwoven mats, and hardly as closely associated individuals.〔〔(Hair Cap Mosses ), Thunder Bay, ON, Lakehead University, Faculty of forestry and the forest environment (Producer).〕 Juniper haircap moss have a well-developed system of tiny tubes for carrying water from the rhizoids to leaves that is uncharacteristic of mosses, resembling the system that has evolved in vascular plants such as ferns, gymnosperms and angiosperms. As a result of this developed system, stems have greater potential for height than in typical mosses.〔
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