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Eriophorum viridicarinatum : ウィキペディア英語版 | Eriophorum viridicarinatum
''Eriophorum viridicarinatum'' is a species of sedge known by the common names thinleaf cottonsedge, green-keeled cottongrass, and bog cottongrass. It is native to northern North America, where it occurs in Alaska and throughout much of Canada, its range extending into the northern contiguous United States.〔Williams, Tara Y. 1990. Eriophorum viridi-carinatum. In: Fire Effects Information System, (). U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.〕 Its distribution is more patchy in the west but it is widespread in eastern Canada.〔(''Eriophorum viridicarinatum''. ) The Nature Conservancy.〕 This perennial sedge forms tufts of stiff, erect stems, sometimes just a single stem, and basal leaves up to 30 centimeters long. It grows from a rhizome. The inflorescence is accompanied by two to four leaflike bracts each a few centimeters long. There are up to 30 spikelets, increasing in size as the fruit develops, reaching 3 centimeters in length. Each flower has a tuft of white or brown bristles that are long and cottony, measuring up to 2.5 centimeters long.〔〔(''Eriophorum viridicarinatum''. ) Flora of North America.〕 This plant grows at high latitudes and high elevations, in cold, wet habitat types such as sphagnum bogs and tundra overlying permafrost. It is stimulated to grow in the spring when the thaw begins to increase moisture in the environment.〔 ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Eriophorum viridicarinatum」の詳細全文を読む
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