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Ambrosia grayi : ウィキペディア英語版 | Ambrosia grayi
''Ambrosia grayi '' (woollyleaf bur ragweed) is a North American species of plants in the sunflower family. It is native to the west-central part of the Great Plains of the United States, in the states of Nebraska, Kansas, Colorado, New Mexico, Oklahoma, and Texas.〔(Biota of North America Program 2014 county distribution map )〕 ''Ambrosia grayi'' is a perennial herb up to 30 cm (12 inches) tall. Leaves are elliptical or egg-shaped. Flower heads are small and inconspicuous, as the plant is wind-pollinated. The heads develop into spiny burs as the seeds ripen.〔(Flora of North America Vol. 21 Page 17 ''Ambrosia grayi'' (A. Nelson) Shinners, Field & Lab. 17: 174. 1949 )〕 ==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「Ambrosia grayi」の詳細全文を読む
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