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''Gnaphalium sylvaticum'', commonly known as heath cudweed, wood cudweed, golden motherwort, chafeweed, and owl's crown.〔(An illustrated flora of the northern United States: Canada and the British possessions from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic ocean westward to the 102d meridian, Volume 3 ), 1898, p. 403.〕 is a species of plants in the sunflower family. It is widespread across much of Europe.〔(Altervista Flora Italiana, ''Gnaphalium sylvaticum'' L. ) includes photos and European distribution map〕 The species was first formally described by Carl Linnaeus in 1753. ==Description== It is a perennial herb with short runners.〔 The plant is 8 to 60 cm tall.〔 The leaves are lanceolate in shape, pointed, 2 to 8 cm long, with a single vein. They have no hair on top, but are woolly hairy below. The upper leaves become progressively shorter and narrower.〔 The flower heads are 6mm long. The bracts of the flower heads have a green centre, and chaffy brown edges. The florets are pale brown. The achenes are hairy with reddish pappus hairs.〔 If flowers from July until September. 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「Gnaphalium sylvaticum」の詳細全文を読む スポンサード リンク
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