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Astragalus bisulcatus : ウィキペディア英語版 | Astragalus bisulcatus
''Astragalus bisulcatus'', commonly called two-grooved milkvetch or silver-leafed milkvetch, is a leafy perennial with pea-like flowers. It is native to central and western North America,〔http://plants.usda.gov/java/profile?symbol=ASBI2〕 and typically grows on selenium-rich soils. It accumulates selenium within its tissues, and when livestock consume it, the selenium can be toxic. ==Description== ''Astragalus bisulcatus'' is a herbaceous perennial with a thick woody root-stock, growing 30 to 100cms tall. It has numerous simple stems and long pinnate leaves. The flowers are produced in narrow elongated racemes. The flowers are a showy purple color and blooming occurs in late spring and early summer. The seed pods characteristically are two grooved on the upper surface. The fruits ripen and release their seeds in July and August. The seeds are dark brown or black, reniform in shape, 4 mm long and 2 mm wide.〔
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「Astragalus bisulcatus」の詳細全文を読む
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