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Helianthus resinosus : ウィキペディア英語版 | Helianthus resinosus
''Helianthus resinosus'' is a North American species of sunflower known by the common name Resindot sunflower.〔(Flora of North America, Helianthus resinosus Small, 1903. Resindot sunflower )〕 It is native to the southeastern United States from Mississippi to North Carolina.〔(Biota of North America Program 2014 county distribution map )〕 ''Helianthus resinosus '' grows in open swamps and meadows, and along roadsides. It is an perennial herb up to 300 cm (10 feet) tall, spreading by means of underground rhizomes. Leaves are up to 20 cm (8 inches) long, dotted with visible resin glands embedded in the leaves. One plant usually produces 1-5 flower heads, each containing 10-20 yellow ray florets surrounding 90 or more yellow disc florets.〔〔(Small, John Kunkel 1903. Flora of the Southeastern United States 1269, 1340 )〕 ==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 resinosus」の詳細全文を読む
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