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Helenium brevifolium : ウィキペディア英語版 | Helenium brevifolium
''Helenium brevifolium'' is a North American perennial plant in the Sunflower Family, commonly known as Shortleaf sneezeweed.〔 It is native to the southeastern United States, from Virginia to eastern Louisiana and inland as far as Tennessee.〔(Biota of North America Program 2014 county distribution map )〕 ''Helenium brevifolium'' is an perennial herb up to 100 cm (40 inches) tall. One plant can produce as many as 10 flower heads, in branching arrays. The head is spherical or hemispherical, with sometimes as many as 800 disc florets, each floret yellow near the base but purple or brown or yellow towards the tip. There are also 9-24 yellow ray florets. The species grows in fogs, swamps, and other wet places.〔(Flora of North America, ''Helenium brevifolium'' (Nuttall) Alph. Wood, 1870. Shortleaf sneezeweed )〕 ==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「Helenium brevifolium」の詳細全文を読む
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