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Trifolium leibergii : ウィキペディア英語版 | Trifolium leibergii
''Trifolium leibergii'' is a species of flowering plant in the legume family known by the common name Leiberg's clover. It is native to Oregon and Nevada in the United States.〔(''Trifolium leibergii''. ) Center for Plant Conservation.〕〔(''Trifolium leibergii''. ) NatureServe.〕 This clover is a perennial herb growing 10 to 15 centimeters tall. The plant has a coating of gray hairs. The leaves are each made up of three spine-tipped leaflets. The inflorescence is a head of several flowers which are cream-colored with tinges of pink or purple. Blooming occurs in June and July.〔 This plant grows in soils of decomposing tuff, a volcanic ash substrate. The plants grow in cracks in the soil, so that they can appear to be growing in a straight line. There is little other vegetation in the habitat, but associated plants may include ''Artemisia arbuscula''.〔 This plant may have a disjunct distribution, but it is possible more populations occur in the 300 kilometers between the two population centers in southern Oregon and northern Nevada.〔 ==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「Trifolium leibergii」の詳細全文を読む
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