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Eupatorium altissimum : ウィキペディア英語版 | Eupatorium altissimum
''Eupatorium altissimum'' (tall thoroughwort) is a perennial plant whose native range includes much of the eastern and central United States and Canada (Ontario south to Nebraska, eastern Texas, the Florida Panhandle, and Massachusetts. It almost always grows on limestone soils, as does ''Brickellia eupatorioides'', with which it is often confused. It can hybridize with ''Eupatorium serotinum''.〔(【引用サイトリンク】 Eupatorium altissimum )〕 ''Eupatorium altissimum'' is a perennial herb sometimes more than 150 cm (5 feet) tall. Leaves and stems are covered with whitish hairs. The plant produces a large number of small white flower heads in a large flat-topped array at the top of the plant. Each head generally has 5 disc florets but no ray florets.〔 ''Eupatorium altissimum'' is part of ''Eupatorium'' even when that genus is defined narrowly to include about 40 species of mostly white-flowered plants of North America, Asia, and Europe.〔(【引用サイトリンク】 Eupatorium )〕 == 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「Eupatorium altissimum」の詳細全文を読む
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