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Ageratina
''Ageratina'' (snakeroot) is a genus of about 250〔(【引用サイトリンク】 url = http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=100803 )〕〔(【引用サイトリンク】 work = Arboles y arbustos de los Andes del Ecuador (Trees and shrubs of the Andes of Ecuador) )〕–290〔(【引用サイトリンク】 ''Ageratina'' Spach )〕 perennials and rounded shrubs in the family Asteraceae. These plants grow mainly in the warmer regions of the Americas and West Indies. Over 150 species are native to Mexico.〔Turner, B. L. (2010). (Four new species of ''Ageratina'' (Asteraceae): Eupatorieae) from Oaxaca, Mexico. ) ''Phytologia'' 92:3 388-99.〕 Some flourish in the cooler areas of the eastern United States. Two Mexican species have become a pest in parts of Australia and Taiwan.〔 ''Ageratina'' used to belong to the genus ''Eupatorium'', but it has been reclassified. ==Description== The inflorescence consists of multiple fluffy, red or pinkish-white capitula in clusters. These lack the typical ray flowers of the composites. They have multiple, much-branched woody stems. The petioles are rather long. The leaves are triangular, serrate and opposite with a foul-smelling, musky scent.
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「Ageratina」の詳細全文を読む
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