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Sericocarpus linifolius
''Sericocarpus linifolius'' (known by the common names narrowleaf whitetop aster or flax leaf whitetop) is a perennial forb native to the eastern United States,〔(【引用サイトリンク】url=http://plants.usda.gov/core/profile?symbol=SELI5 ) USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov). National Plant Data Team, Greensboro, NC 27401-4901 USA.〕 that produces white composite flowers in summer.
==Description==
''Sericocarpus linifolius'' has a smooth slender 30 to 75 centimeter tall stem. Its leaves are sessile, they are 2.5 to 5 centimeters long, and only 3 to 6 millimeters wide. They are thick and rough around the edges. The flower heads are borne on branches forming a flat topped cluster. Each flower head consists of 5 to 15 disk flowers and 2 to 6 ray flowers, which are about a centimeter long. The fruit are cypselae with a pappus of white bristles.〔Britton, Nathaniel Lord & Brown, Addison (1913). (''An Illustrated Flora of the Northern United States, Canada and the British Possessions: From Newfoundland to the Parallel of the Southern Boundary of Virginia, and from the Atlantic Ocean Westward to the 102d Meridian, Volume 3.'' ), p. 405. Charles Scribner's Sons, New York.〕〔(【引用サイトリンク】url=http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067520 ) 'eFloras (2008). Published on the Internet (http://www.efloras.org). Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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