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Helianthus radula : ウィキペディア英語版 | Helianthus radula
''Helianthus radula'' is a North American species of sunflower known by the common name rayless sunflower or pineland sunflower.〔(Flora of North America, Helianthus radula (Pursh) Torrey & A. Gray, 1842. Rayless or pineland sunflower )〕 It is native to the southeastern United States from eastern Louisiana to South Carolina.〔(Biota of North America Program 2014 county distribution map )〕 ''Helianthus radula'' grows in sandy, open woodlands such as pine barrens. It is an perennial herb up to 100 cm (40 inches) tall. One plant usually produces only one flower head, containing 0-8 yellow ray florets surrounding sometimes as many as 150 or more yellow or brown disc florets.〔 ==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「Helianthus radula」の詳細全文を読む
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